Chapter 7 · Grammar Academy

Prepositions: In, On, At, Time, Place & Dependent Prepositions

A preposition links a noun phrase to the rest of the sentence and names the relation - where, when, which way, with what. This guide covers in, on and at for time and place, since and for, movement, dependent prepositions, verbs that need no preposition, ending a sentence with a preposition, and phrasal verbs, with clear examples, for learners aged 5 to 19.

▶ Open the interactive prepositions lesson

For beginners · ages 5–8

Where is it?

A preposition is a little word that tells where one thing is from another thing. It always has a partner after it - the naming word it points to.

Look at the fifth one. 'Next to' is written as two words, but it does one job, so we treat it as one little word. Look at the last one too. 'Between' needs a partner with two things in it - you cannot be between one cup.

The partner test, part one. Find the little word, then find its partner right after it: in the box, under the bed. Ask where? - the little word and its partner answer together. In Section 8 this grows into the Preposition Test.

So when you look for a where word, do not stop at the little word. Look one step further along the line and find the thing it points to. The two of them together tell you where.

Here is one toy and one table. Only the little word changes. Read the picture each one gives you.

What was saidThe picture you get
The teddy is on the table.Sitting on top, where everyone can see it.
The teddy is under the table.Down on the floor, with the table over it like a roof.
The teddy is behind the table.At the back. You might have to walk round to find it.
The teddy is next to the table.Right beside it, touching or nearly touching.
The teddy is between the table and the bed.In the gap, with the table on one side and the bed on the other.
The teddy is in the drawer.Inside, hidden. You have to open the drawer to see it.

The teddy never changed. The table mostly stayed too. All the change came from one little word, and that word answered where?

Notice the last two rows. 'Between' took a bigger partner - 'the table and the bed' - because you need two things to be between. And in the last row the partner changed to 'the drawer', because 'in' needs something you can be inside. The little word and its partner have to fit each other.

Think of the little word as an arrow on a map. The partner is the landmark - the bed, the box, the door. 'Under' points the arrow down below the landmark. 'On' points it to the top. 'Behind' points it round the back. 'Next to' points it to the side. The landmark stays put. The arrow decides where you look, and you always need both the arrow and the landmark to find the treasure.

One line can have two where words, each with its own partner. 'The cup is on the table next to the window.' 'On' tells where the cup is, and 'next to' tells where the table is. Each little word has its own partner. A where word can also come first, the way storytellers like to do it: 'Under the bed, the cat was fast asleep.' The little word and its partner moved to the front together. They always travel as a pair.

Here is a hard one, and it is fine to find it hard. 'The cat is inside the box.' Find the little word: inside. Find its partner: the box. Inside the box - that tells where the cat is. Now: 'The cat is inside.' Where is the partner? There is none. The line still works, because we all know it means inside the house. So 'inside' sometimes has a partner and sometimes stands alone. Some grammar books give it a different name when it is alone; others say it is still the same kind of word, just without its partner. You do not need to settle that here. For now, hold one idea: the little words in this section almost always come with a partner. When one seems to be alone, ask 'inside what?' - and the answer is usually a place everyone already knows. Section 8 comes back to words that can stand alone.

Can one little word really change a whole story? 'The monster is under the bed.' 'The monster is on the bed.' Same monster, same bed. With 'under', it is hiding, and you might never see it. With 'on', it is sitting right there in the open - a much stranger story, and maybe a funny one. Try one more. 'The dog is in the car.' 'The dog is behind the car.' With 'in', the dog is safe and ready for a trip. With 'behind', someone had better look before they drive off. And one last pair: 'Kabir stood next to the teacher.' 'Kabir stood behind the teacher.' One Kabir is right there, easy to see. The other one might be hiding, or might be up to something. That is how much work one tiny word can do.

Not every word after a doing word is a where word. In 'The ball is red', 'red' tells what the ball is like, not where it is. In 'Tom has a ball', 'a ball' is the thing he has. And not every where word is a little word with a partner. 'The ball is here' and 'The ball is upstairs' tell where, but they have no partner after them - they do the job on their own. So do not grab any word that tells where. Look for the little word that has a partner right after it: in the box, under the bed. The words 'in' and 'on' also tell when - 'on Monday', 'in June' - and that job has a section of its own later in this band.

  1. Find the thing you are looking for first: the ball, the cat, the shoes.
  2. Ask where is it? out loud.
  3. Find the little word that starts the answer: in, on, under, behind, next to, between.
  4. Look one step further and find its partner: the box, the bed.
  5. Treat 'next to' as one little word, and tap both halves.
  6. Check that 'between' has two things in its partner: between the cup and the plate.
  7. Swap in a different little word - 'on' for 'under' - and picture the thing moving. If it moves, you found the right word.
  8. Do not tap the thing you are looking for, or the partner by itself. The little word sits between them.
You can now find the little word that tells where one thing is from another. The naming words tell you what the things are. The little word - a preposition - tells you where one is from the other: in, on, under, behind, next to, between. You find it by asking where. The answer always starts with the little word and carries on with its partner: under the bed, in the box, next to the chair. The partner is the naming word after the little word. The little word and the partner travel together, even when they jump to the front: 'Under the bed, the cat slept.' 'Next to' is two written words doing one job. 'Between' needs a partner with two things in it. Change the little word and the thing moves in the picture. That is how you know it is doing the where job. This band is about noticing. Choosing the right little word comes later in the chapter.

In, on, at: box, table, door

Three little where words do a huge amount of work. Each one has a picture.

Little wordThe pictureExamples
in📦 a box - inside something with sides all roundin the box, in the room, in the garden, in my bag
on🍽 a table - on top of a flat surface, touching iton the table, on the floor, on the wall, on my plate
at🚪 a door - one spot, a place to stop or meetat the door, at the gate, at the bus stop, at the window

Look at 'on the wall'. A wall stands up, not flat like a table - but a picture on the wall is still touching a surface. 'On' is about touching the outside of something, whichever way it faces.

The partner test, part two. Find the little word and its partner: in the box, on the table, at the door. Now ask what the partner is like. Something with sides all round? Use in. A surface? Use on. A spot to stop at? Use at. The partner helps choose the word.

So when you choose between in, on and at, look hard at the partner first. Ask yourself: is it a box, a table, or a door?

Here is one place, told three ways. Each little word gives a different picture of the same spot.

What was saidThe picture you get
The frog is in the pond.Swimming in the water, with water all round it.
The frog is on the pond.Sitting on top - probably on a lily pad floating on the surface.
The frog is at the pond.Near it, at that spot - maybe on the edge, about to jump in.
Ravi is in the bus.Inside, with the bus all round him.
Ravi is at the bus stop.Standing at one spot, waiting for the bus to come.
The sticker is on the window.Stuck to the glass, touching the surface.
Mira is at the window.Standing by the window, looking out.

The pond never changed. The frog never changed. The little word changed where the frog is, because each word brings its own picture.

Look at the window rows. The sticker is on the window because it touches the glass. Mira is at the window because she is standing at that spot to look out. Same partner, two little words, two true pictures.

Hold up three things in your mind. A box with sides: that is 'in' - you are surrounded. A table top: that is 'on' - you are resting on a surface. A door: that is 'at' - you are standing at one spot, knocking. Whenever you need one of the three words, flash the three pictures and ask which one your partner looks like. The box, the table and the door will carry you through most sentences.

The three pictures can grow bigger. 'In' works for a box, and also for a room, a garden, a town and a country: in the kitchen, in Delhi, in India. They are all places with edges all round. 'At' can shrink a big place down to one spot on a journey. 'We stopped at Delhi on the way to Agra' pictures Delhi as a dot on a map where the train stopped. The place did not get smaller. Your picture of it did.

Here is a hard one, and it is fine to find it hard. 'Let's meet in the park.' 'Let's meet at the park.' Which is right? Both are. With 'in', you picture the park as a big space with edges, and you will be somewhere inside it. With 'at', you picture the park as one spot to meet at, like a door. So in, on and at are not always decided by the place alone. They are decided by how the speaker pictures the place. A bus stop is almost always a spot, so it is almost always 'at'. A box is almost always a container, so it is almost always 'in'. But a park, a pond or a school can be pictured more than one way. And some fixed phrases do not follow the pictures neatly at all - 'on the bus' but 'in the car', for example. Those have a section of their own in Practice. For now, the three pictures are enough, and you will use them for years.

Can one little word really change where someone is? 'Grandpa is in the car.' 'Grandpa is on the car.' Same grandpa, same car. With 'in', he is sitting inside, ready to drive. With 'on', he is sitting on the roof - and everybody wants to know why. Try one more. 'There is a spider in the cake.' 'There is a spider on the cake.' With 'on', you can see it and brush it off. With 'in', it is hiding inside, and nobody wants the next slice. And one last pair: 'Tom is at the pool.' 'Tom is in the pool.' One Tom is standing by the edge with a dry towel. The other is already splashing. One little word decides whether he is wet.

The three pictures explain most sentences, but not every one. Some phrases are fixed habits that you learn by hearing them: 'on the bus', 'on the train' and 'on the plane', but 'in the car' and 'in the taxi'. That is not a mistake in the pictures - it is just how English grew. Practice has a section on these. And 'in', 'on' and 'at' also tell when - 'in June', 'on Monday', 'at five o'clock'. That is the very next section, and you will see the same three pictures come back. So use the box, the table and the door as your first guess, and let your ears check the answer.

  1. Find the little word and its partner: in the box, on the table, at the door.
  2. Ask what the partner is like.
  3. Sides all round, like a box, a room or a bag? Use in.
  4. A surface you can rest on or stick to, like a table, a floor or a wall? Use on.
  5. A spot where you stop, wait or meet, like a door, a gate or a bus stop? Use at.
  6. If a place can be pictured two ways, like a park or a pond, both words can be right.
  7. Say the sentence out loud and picture it. If the picture is silly - Grandpa on the car - swap the word.
You can now match in, on and at to three pictures. 'In' is a box: inside something with sides all round - in the box, in the room, in my bag, in India. 'On' is a table: on top of a surface, touching it - on the table, on the floor, on the wall. 'At' is a door: one spot where you stop, wait or meet - at the door, at the gate, at the bus stop. You choose by looking at the partner and asking whether it is a box, a table or a door. One place can sometimes take two words, because the speaker can picture it two ways - in the park, at the park. Both can be right. A few phrases are fixed habits that do not follow the pictures, like 'on the bus' and 'in the car'. You will meet them properly in Practice. This band is about noticing. Next, the same three words come back to tell time.

In, on, at for time

The three little words from the last section can also tell when. The picture depends on how big the piece of time is.

Little wordSize of timeExamples
in📅 a big box of time - a month, a season, a yearin June, in summer, in 2025, in the morning
on📆 one day - a day of the week or a dateon Monday, on my birthday, on 15 August, on Diwali
at🕓 one spot on the clockat five o'clock, at half past two, at lunchtime, at bedtime

Look at 'in the morning'. A morning is part of a day, but it is a stretch of hours - a little box of time you are somewhere inside. So it takes 'in', like a month does.

The partner test, part three. Find the little word and its partner: in June, on Monday, at five o'clock. Ask when? Then ask how big the partner is. A big stretch? in. One day? on. One clock spot? at.

So the partner decides again. For where, you asked 'box, table or door?'. For when, you ask 'big stretch, one day, or one spot?'.

Here is one busy week, told with the three time words. Watch how the size of the partner picks the little word.

What was saidThe size of the time
We go to Nani's house in May.A whole month - some day inside it.
We go to Nani's house on Friday.One day, picked out on the calendar.
We go to Nani's house at six o'clock.One exact moment on the clock.
It snows in winter.A whole season - three months long.
Presents come on Christmas Day.One day with a name.
We eat at lunchtime.One spot in the day, like a clock time.

Going to Nani's house stayed the same in the first three rows. Only the when changed, and the little word changed with it. The bigger the time, the more it is like a box you are somewhere in. The smaller it is, the more it is like one spot.

Look at 'on Christmas Day'. It is a special day, but it is still one day, so it takes 'on' - just like 'on Monday' or 'on my birthday'.

Picture three sizes of time. A month is a big toy box full of days - you are in it somewhere. One day is a single square on the calendar that you stand on - you are on it. A clock time is the tip of the clock's hand - one sharp spot you arrive at. Big box, one square, one tip. Ask which one your time partner looks like, and the word comes with it.

A time partner can have describing words inside it, and the little word does not change. 'On a sunny Monday', 'in the long summer holidays', 'at exactly five o'clock'. The size of the time still decides. One line can also hold two time words: 'The party is on Saturday at four o'clock.' 'On' goes with the day and 'at' goes with the clock time. Each little word has its own partner.

Here is a hard one, and it is fine to find it hard. 'In the morning' - a morning is a stretch of hours, so 'in' is right. 'On Monday' - one day, so 'on' is right. Now put them together: 'on Monday morning'. Why not 'in Monday morning'? Because once you name the day, the day wins. 'Monday morning' is one day's morning, picked out on the calendar, so English says 'on'. The same happens with 'on Sunday evening' and 'on my birthday morning'. And then there is 'at night'. A night is a long stretch, like a morning, so you might expect 'in the night'. English mostly says 'at night' - it is a habit, not a picture. 'In the night' is also used, when something happens during one particular night: 'The baby woke up in the night.' So the pictures are a very good guide, and a few time phrases are simply habits you learn by ear. Practice has a whole section on them.

Can one little word change when something happens? 'The shop opens at nine.' 'The shop opens in nine.' Only the first is how people say a time. The second sounds broken - unless someone means 'in nine minutes', which is a different job for 'in' altogether. Try one more. 'I will see you on Friday.' 'I will see you in Friday.' The first is an ordinary plan. The second sounds like Friday is a room you will both be standing inside. And one last pair: 'Mira was born in May.' 'Mira was born on May the fifth.' Both are right. The first tells you the box of time, the second tells you the exact square. One little word shows how close you have zoomed in on the calendar.

The three sizes explain most time phrases, but a few are habits: 'at night' (not 'in the night' for night in general), 'at the weekend' in British English and 'on the weekend' in American English. Both weekend forms are right; they belong to different places. Practice covers these. Some time words take no little word at all: 'today', 'tomorrow', 'yesterday', 'next week', 'last year', 'every day'. You do not say 'on today' or 'in next week'. And 'in' can also mean 'after this much time': 'I will be ready in five minutes.' That is a different job, and it will come back later.

  1. Find the little word and its time partner: in June, on Monday, at five o'clock.
  2. Ask when? out loud.
  3. Ask how big the partner is.
  4. A month, a season, a year, or a part of the day like the morning? Use in.
  5. One day of the week, a date, or a named day like a birthday or a festival? Use on.
  6. A clock time, or a spot in the day like lunchtime or bedtime? Use at.
  7. If the time already says 'next', 'last', 'this' or 'every', leave the little word out.
  8. If a day is named - 'Monday morning' - the day wins, and you use on.
You can now use in, on and at to tell when. The same three words that told where now tell when, and the pictures still work. You choose by how big the piece of time is. 'In' is for a big box of time: in June, in summer, in 2025, in the morning. 'On' is for one day: on Monday, on my birthday, on 15 August, on Diwali. 'At' is for one spot on the clock: at five o'clock, at lunchtime, at bedtime. You find the little word, find its time partner, and ask: big stretch, one day, or one spot? A few phrases are habits rather than pictures - 'at night', and 'at the weekend' or 'on the weekend' depending on where you live. And words like 'today', 'next week' and 'every day' take no little word at all. This band is about noticing. Next, little words that are going somewhere.

Going somewhere

Some little words tell where a thing is. Others tell which way a thing goes.

Staying putGoing somewhere
The cat is in the box.The cat jumped into the box.
The cat is on the bed.The cat climbed onto the bed.
The cat is in the house.The cat ran out of the house.

And some little words are almost always about going:

The partner test, part four. Find the little word and its partner: into the box, across the road. Now ask which way? If the answer is a journey, it is a going-somewhere word. If the thing is just sitting there, it is a staying word.

Look at 'out of'. It is written as two words but does one job, like 'next to'. Tap both halves.

Here is one duck and one pond. Watch the little word change the duck's journey.

What was saidThe picture you get
The duck is in the pond.Floating there, staying put.
The duck jumped into the pond.It was on the bank; now it is splashing in.
The duck climbed out of the pond.It was in the water; now it is on the grass.
The duck swam across the pond.From one bank to the other side.
The duck swam along the edge of the pond.Following the edge, not crossing the middle.
The duck swam through the reeds.In one side of the reeds and out the other, pushing past them.

Only the first row is staying. Every other row is a journey, and the little word tells you which way the duck went.

Look at 'across' and 'along'. Both are about the pond, but they are two different paths. Across goes over to the other side. Along follows the long edge. If a teacher says 'walk along the wall' and you walk across the playground instead, you have gone the wrong way.

Picture the little word as a dotted line drawn with a pencil. A staying word is just a dot: the cat is in the box, and there it sits. A going-somewhere word is a dotted line with an arrow. 'Into' draws the arrow from outside to inside. 'Out of' draws it from inside to outside. 'Across' draws it from one side to the other. 'Through' draws it in one end and out the other. 'Along' draws it beside a long edge. Dot or arrow - that is the question.

One journey can have two going-somewhere words, each with its own partner. 'The dog ran out of the house and across the garden.' 'Out of' goes with 'the house' and 'across' goes with 'the garden'. You can follow the dog's whole path. And a journey can have a start and an end: 'Asha walked from school to the park.' 'From' tells where the journey started and 'to' tells where it ended. They are going-somewhere words too.

Here is a hard one, and it is fine to find it hard. 'The cat jumped in the box.' What happened? There are two possible pictures. In one, the cat was outside and jumped into the box. In the other, the cat was already inside the box, jumping up and down in it. Most people hearing this line would picture the first one, and that is fine - 'jumped in' is normal English for a journey. But if you want to be completely clear, 'into' can only mean the journey. 'The cat jumped into the box' has just one picture. The same is true of 'on' and 'onto'. 'The dog jumped on the bed' could be a dog landing on the bed, or a dog already on it, bouncing. 'Onto' picks the landing. So 'in' and 'on' after a moving word are not wrong. They just leave room for two pictures. 'Into' and 'onto' close the gap. You do not need to settle every case here - just notice that the longer word is the clearer one.

Can one little word change a whole journey? 'The ball rolled across the road.' 'The ball rolled along the road.' With 'across', the ball went from one side to the other - it crossed. With 'along', it kept rolling down the road, maybe a long way. Two very different chases for whoever has to fetch it. Try one more. 'The bird flew into the house.' 'The bird flew out of the house.' One is a problem. The other is a problem solved. And one last pair: 'Ellie is in the pool.' 'Ellie dived into the pool.' The first Ellie is already swimming. The second one is in the air right now, about to make a big splash.

Not every word after a moving word is a going-somewhere word. In 'Kofi ran fast', 'fast' tells how he ran, not which way. In 'Kofi ran home', 'home' tells where, but it has no partner after it. Some little words can be staying or going, depending on the line. 'The cat is behind the sofa' is staying. 'The cat ran behind the sofa' is going. 'Under', 'behind' and 'over' do both jobs. And remember: 'in' after a moving word is often fine - 'jump in the water', 'put it in the bag'. Do not mark it wrong just because 'into' exists.

  1. Find the thing and ask: is it staying put, or going somewhere?
  2. If it is going, ask which way? out loud.
  3. Find the little word that starts the answer: into, onto, out of, across, through, along.
  4. Find its partner right after it: into the box, across the road.
  5. Treat 'out of' as one little word, and tap both halves.
  6. Across = to the other side. Along = following the long edge. Through = in one end and out the other.
  7. Do not mark 'in' wrong after put, jump, fall or throw. 'Into' is clearer, but 'in' is often fine too.
  8. Draw it with your finger - a dot for staying, an arrow for going.
You can now tell a staying word from a going-somewhere word. Staying words tell where a thing is: in the box, on the bed. Going-somewhere words tell which way a thing moves: into the box, onto the bed, out of the house, across the road, through the tunnel, along the path. You find them by asking 'which way?'. The answer starts with the little word and carries on with its partner. 'Into' and 'onto' add a journey to 'in' and 'on'. 'Out of' is one little word written as two. Across goes to the other side, along follows a long edge, and through goes in one end and out the other. After a moving word, 'in' and 'on' are often fine too - 'jump in the pool' is normal English. 'Into' and 'onto' simply make the journey clearer. This band is about noticing. Next, little words that tell who with, what with and who for.

With, by, for

Some little words do not tell where or when. They link a thing to a person, a tool, a way of travelling, or someone it is meant for.

Little word + partnerThe question it answers
👫 with a friendwho with? - company
🥄 with a spoonwhat with? - the tool you use
🚌 by bushow did you travel? - the way you went
🎁 a gift for Mumwho is it for? - who gets it
🍲 a bowl for soupwhat is it for? - what it is used for

Look at the first two rows. 'With' answers two different questions. With a friend, the partner is a person, so it is company. With a spoon, the partner is a tool, so it is what you used. The little word is the same; the partner tells you which job it is doing.

The partner test, part five. Find the little word and its partner: with a friend, by bus, for Mum. Then ask which question they answer together - who with? what with? how? who for? - and let the partner help you decide.

Look at 'by bus' too. There is no 'the' or 'a' in the partner. When 'by' tells how you travel, English says 'by bus', 'by train', 'by car', 'by boat' - just the bare word.

Here is one little word with different partners. Watch the partner change the question.

What was saidThe question it answers
Ravi ate lunch with his sister.Who with? His sister sat with him.
Ravi ate lunch with a fork.What with? The fork was his tool.
Ravi ate rice with dal.What together? The dal came on the plate with the rice.
Mei went to school by bike.How did she travel? On her bike.
Mei went to school with her bike.Who or what with? She had her bike beside her - maybe pushing it.
Tom drew a card for Grandpa.Who is it for? Grandpa will get it.

In the first three rows the little word never changed. Only the partner changed - a person, a tool, a food - and each partner turned 'with' into a slightly different picture.

Look at the two Mei rows. 'By bike' says the bike is how she travelled - she rode it. 'With her bike' only says the bike was with her. She might have been pushing it with a flat tyre. One little word changed the whole journey.

Picture three little helpers. 'With' holds hands - with a friend - or holds a tool - with a spoon. It always brings something along. 'By' is a ticket - by bus, by train - showing how you got there. 'For' is a gift tag with a name on it - for Mum - showing who it is meant for. Hands or tool, ticket, gift tag. When you meet one of the three, picture its helper, then look at the partner to see what it is holding.

One line can hold all three: 'Kabir went by train with his dad to buy a kite for his sister.' 'By train' is how, 'with his dad' is who with, and 'for his sister' is who it is for. Each little word has its own partner. 'For' can also tell what something is used for: 'a bowl for soup', 'a bag for books', 'shoes for running'. The gift tag has a job written on it instead of a name.

Here is a hard one, and it is fine to find it hard. 'Arjun saw the girl with the umbrella.' Who has the umbrella? Maybe the girl is carrying it, and that is how Arjun knew which girl. Or maybe Arjun is holding the umbrella, and he saw the girl from under it. The line does not say. 'With the umbrella' can belong to the girl or to Arjun's seeing. Most people would picture the girl holding it, but both pictures fit the words. This happens because 'with' can mean company, a tool, or just 'having'. When a line has two people or things before 'with', you sometimes cannot tell which one the partner goes with. You do not need to fix this here. Grown-up writers have to think hard about it, and Craft has a whole section on moving the little word and its partner so the reader sees one picture. For now, just notice: when a 'with' line feels like it has two pictures, it probably does.

Can one little word really change the story? 'Mira went to the party with Ravi.' 'Mira went to the party for Ravi.' With 'with', Ravi was right beside her - they went together. With 'for', Ravi might not even be there. Maybe Mira went because Ravi asked her to, or to bring him back some cake. Try one more. 'Ellie came by car.' 'Ellie came with a car.' The first is an ordinary journey. The second sounds like Ellie arrived and brought a whole car along as a present. And one last pair: 'Tom painted a picture with his brother.' 'Tom painted a picture of his brother.' In one, two boys are painting together. In the other, the brother is sitting very still while Tom paints his face.

With, by and for have more jobs than the ones in this section. 'By' can mean next to: 'the chair by the window'. It can also mean who made something: 'a story by Ruskin Bond'. 'For' can tell how long: 'for three days' - that job has a section in Practice. Not every way of travelling uses 'by'. You go 'on foot', not 'by foot', in careful English, though 'by foot' is sometimes heard. So in this section, stick to the four questions - who with, what with, how you travel, who it is for - and let later sections add the other jobs.

  1. Find the little word: with, by or for.
  2. Find its partner right after it: with a friend, by bus, for Mum.
  3. Look at the partner. Is it a person, a tool, a way of travelling, or someone who gets something?
  4. With + a person = who with. With + a tool = what with.
  5. By + bus, train, car, boat = how you travelled. No 'the' after 'by' for travel.
  6. For + a person = who it is meant for. For + a job = what it is used for.
  7. If a 'with' line has two pictures, notice it - you have found something grown-up writers work hard to fix.
  8. Swap the little word - 'with Ravi' for 'for Ravi' - and hear the story change.
You can now find with, by and for, and name the question each one answers. These little words do not tell where or when. They link a thing to a person, a tool, a way of travelling, or someone it is meant for. 'With' + a person tells who with: with a friend. 'With' + a tool tells what with: with a spoon. The partner decides which job it is. 'By' + a way of travelling tells how you went: by bus, by train. There is no 'the' in the partner. 'For' tells who something is meant for - a gift for Mum - or what it is used for - a bowl for soup. The partner test still works: find the little word, find its partner, and ask what question they answer together. These three words have other jobs too, like 'by the window' and 'for three days'. Later sections add them.

The little word and its partner

The little word and its partner make one piece. The piece is called a prepositional phrase - the little word plus its partner.

Each piece can stand alone as an answer. 'Where is the cat?' 'Under the bed.' 'When can we play?' 'After lunch.' You do not need the rest of the sentence.

The partner test, part six. Find the little word, then follow the partner all the way to its end: under the big old bed. The whole stretch is the phrase. Ask a question - where? when? who with? - and the whole phrase should answer it on its own.

The phrase starts with the little word and ends when the partner ends. Describing words inside the partner belong to the phrase too: under the big old bed is one piece, all five words of it.

Watch one phrase move around a sentence. It always moves in one piece.

Where the phrase sitsWhat you notice
The cat slept under the bed.At the end - the usual place.
Under the bed, the cat slept.At the front - it sounds like the start of a story.
The cat slept under. The bed was dark.Broken in half - 'slept under' has lost its partner.
We play after lunch.At the end.
After lunch, we play.At the front - you hear the when first.
We play after and eat lunch.Broken - now it means something else entirely.

The two good places in each group keep the phrase whole. The broken rows split the little word from its partner, and the meaning falls apart.

Look at the last row. 'We play after and eat lunch' is not the same idea at all. When the partner is taken away from 'after', the word stops doing its job. That is why the little word and its partner are one piece.

Picture a little train with an engine and carriages. The engine is the little word - under, after, with. The carriages are the partner - the, big, old, bed. The engine always goes first, and the carriages are hooked on behind it. You can park the whole train at the end of the sentence or at the front, but you cannot unhook the engine and leave the carriages behind. Where the engine goes, the carriages follow.

The partner can grow as long as you like, and it is still one phrase. 'Under the bed' - 'under the big bed' - 'under the big old wooden bed'. The engine stays the same; you just add carriages. A phrase can also sit right after a naming word and tell which one: 'the girl with the red bag', 'the house on the hill'. Here the phrase is not telling where the action happened. It is telling which girl, which house.

Here is a hard one, and it is fine to find it hard. 'The book on the table is mine.' Find the phrase: on the table. Now ask what it is doing. It is not telling where something happened. It is telling which book - the one on the table, not the one on the shelf. The phrase is hooked on to 'book'. Now: 'I put the book on the table.' Same phrase. But this time it tells where I put the book. It is hooked on to 'put'. So the same phrase can do two jobs. Sometimes it tells which thing - the book on the table. Sometimes it tells where, when or how something happened - put it on the table. The way to tell is to ask a question. 'Which book?' 'The book on the table.' 'Where did I put it?' 'On the table.' Whichever question the phrase answers tells you its job. You do not need to master this now. Craft comes back to phrases that could hook on to two different words. For now, just notice that one phrase can do more than one job.

Can moving one phrase change the story? 'The boy with the dog ran away.' 'The boy ran away with the dog.' In the first, the boy who owns the dog ran away - maybe alone. In the second, the boy ran off and took the dog with him. Same words, one phrase moved, a very different adventure. Try one more. 'After school, Ravi plays cricket.' 'Ravi plays cricket after school.' These two mean the same. Moving the phrase to the front only changes what you hear first. And one last one: 'Asha found a spider in the bath.' If you split the phrase - 'Asha found a spider in. The bath...' - the spider is suddenly nowhere at all. A phrase broken in half cannot tell you where anything is.

Not every group of words starting with a little word is a prepositional phrase in the sense of this section. 'Before we ate' starts with 'before', but a whole sentence follows it, not just a naming partner. That kind of group is taught in Craft. And not every small word with a partner is a preposition. In 'the red bag', 'the' is a naming helper and 'red' is a describing word. A prepositional phrase always starts with a little linking word like in, on, under, with or after. So in this section, look for a little linking word followed by a naming partner, and take the whole stretch together.

  1. Find the little word: under, after, with, by, for.
  2. Follow the partner until it ends: under the big old bed.
  3. Take the whole stretch together - that is the phrase.
  4. Test it: ask where? when? who with? - and check that the phrase answers on its own.
  5. Try moving it to the front. If it moves in one piece and still makes sense, you found the whole phrase.
  6. Never split the little word from its partner.
  7. If there are two little words, look for two phrases: on the table in the kitchen.
  8. Stop at the end of the partner. The doing word after it is not part of the phrase.
You can now see the little word and its partner as one piece. That piece is called a prepositional phrase. It starts with the little word and ends where the partner ends: under the bed, after lunch, with my sister. The partner can grow with describing words, and the phrase grows with it: under the big old wooden bed is still one phrase. The phrase can answer a question all by itself: 'Where?' 'Under the bed.' 'When?' 'After lunch.' It moves around the sentence in one piece - at the end, or at the front for a story sound. It never splits, because the little word needs its partner to do its job. A phrase can tell where, when or how something happened, or it can tell which thing: the book on the table. This band is about noticing. Next, three little words that put things in time order.

Before, after, until

Three little words put things in time order. Each one needs a time partner.

Little word + partnerWhat it tellsOn a line
before schoolthis happens first; school comes later● → school
after dinnerdinner comes first; this happens nextdinner → ●
until bedtimekeep going, then stop when bedtime comes●●●● | bedtime

Look at 'until'. It is different from the other two. 'Before' and 'after' tell you which side of the partner something is on. 'Until' tells you something lasts a while and stops right when the partner arrives.

The partner test, part seven. Find the little word and its time partner: before school, after dinner, until bedtime. Ask when? - and then ask which comes first? The partner is the landmark on the time line.

In this section every partner is a naming word or a time: lunch, school, the holidays, nine o'clock. That is what makes before, after and until prepositions here.

Here is one event - lunch - with three different order words. Watch where the other thing lands on the line.

What was saidThe order you get
We wash our hands before lunch.Wash first, then lunch.
We go outside after lunch.Lunch first, then outside.
We read until lunch.Reading goes on and on, and stops when lunch starts.
Mira plays before dinner.Playing first, dinner later - but she may stop well before dinner.
Mira plays until dinner.Playing goes right up to dinner, and stops only when dinner is ready.
Mira plays after dinner.Dinner first, then playing.

Lunch stayed the same landmark in the first three rows. The order word moved the other thing to one side of it, or stretched it right up to it.

Look at the two Mira rows with 'before' and 'until'. Both put the playing earlier than dinner. But 'until' says the playing lasts right up to dinner time. 'Before' only says it happens sometime earlier - she might play at four and stop at five, with dinner at seven.

Picture a railway line with a station on it. The station is the partner - lunch, school, bedtime. 'Before' puts your train on the track just in front of the station, not there yet. 'After' puts your train past the station, already gone by. 'Until' is a train that keeps rolling along the track and brakes exactly at the station. Before, past, or all the way up to it - that is all three words.

One line can hold two order words: 'We play after lunch until three o'clock.' 'After lunch' tells when the playing starts, and 'until three o'clock' tells when it stops. Together they make a box of time. You will also hear 'till' - 'wait till Friday'. It means the same as 'until', and it is a real old word, not a short cut. Both are fine in speaking; 'until' is a little more common in writing.

Here is a hard one, and it is fine to find it hard. 'Before lunch, we played.' Before is a preposition. Its partner is 'lunch' - a naming word. 'Before we ate lunch, we played.' Now look after 'before'. There is not just a naming partner. There is a whole little sentence: 'we ate lunch', with its own doing word, 'ate'. The word 'before' is the same in both. But it is doing a different job. In the first line it links a naming word. In the second it joins two whole sentences together. Grammar books call that second kind a joining word, or conjunction. The same is true of 'after' and 'until': 'after dinner' is a preposition with a partner, and 'after we had dinner' joins two sentences. You do not need to sort all of this out now. Craft has a whole section on it. For now, in this band, look for before, after and until with a short naming partner - lunch, school, bedtime - and notice when a whole sentence comes after them instead.

Can one little word really turn a plan around? 'Take your medicine before your meal.' 'Take your medicine after your meal.' That is a real difference - some medicines must be taken on an empty stomach, and some with food. A nurse will be very clear about which one she means. Try one more. 'The shop is closed until Monday.' 'The shop is closed after Monday.' In the first, the shop opens again on Monday - good news. In the second, the shop is closing from Monday on - bad news for anyone who needs it next week. And one last pair: 'Ravi stayed until the end.' 'Ravi left before the end.' One boy saw the whole show. The other missed the best part.

Before, after and until can also be joining words when a whole sentence follows: 'before we ate', 'after it stopped raining', 'until the bell rings'. That is a different job, taught in Craft. In this band, stick to naming partners. 'Before' and 'after' can also tell order in place, not time: 'Z comes after Y in the alphabet', 'Your house is just after the bridge.' The order idea is the same - one thing, then the other. And 'until' only works for something that lasts. 'I waited until six' is fine. 'I arrived until six' does not work, because arriving happens in one moment.

  1. Find the little word: before, after or until.
  2. Find its time partner: before school, after dinner, until bedtime.
  3. Ask which comes first? and draw it on a line.
  4. Before = the thing happens first, the partner comes later.
  5. After = the partner comes first, the thing happens next.
  6. Until = the thing keeps going and stops when the partner arrives.
  7. Use 'until' only for something that lasts - waiting, playing, reading, staying.
  8. If a whole sentence follows the little word - 'before we ate' - notice it. That is a different job, for later.
You can now use before, after and until to put things in time order. Each one needs a time partner - a naming word like lunch, school or bedtime, or a time like nine o'clock. 'Before' means this happens first and the partner comes later: brush your teeth before breakfast. 'After' means the partner comes first and this happens next: play after lunch. 'Until' means this keeps going and stops when the partner arrives: stay up until nine o'clock. It only works for things that last. You can put two together to make a box of time: after lunch until three o'clock. When a whole sentence follows these words - 'before we ate' - they are doing a different, joining job. That comes later in the chapter. Next, all the little words come together in one test.

The Preposition Test

Here is the Preposition Test. It has three steps.

Step 1 - Find the partner. Find the little word, then the naming words it takes after it: under the bed, since Monday, with a spoon.

Step 2 - Name the relation. Ask what the pair tells you: where? when? which way? who with? what with? who for?

Step 3 - Take the partner away. If the little word cannot stand without it, it is working as a preposition. If it still stands, it is being used alone.
The lineStep 1 and 2Step 3: take the partner away
Priya sat next to Ravi.partner: Ravi - where?'Priya sat next to.' Broken - a preposition.
The gift is for Mum.partner: Mum - who for?'The gift is for.' Broken - a preposition.
The cat is inside the box.partner: the box - where?'The cat is inside.' Still stands.
Tom climbed up the tree.partner: the tree - which way?'Tom climbed up.' Still stands.

So 'next to' and 'for' always need a partner. 'Inside' and 'up' can have one - and then they are prepositions - or they can manage alone. The test tells you which is happening in the line in front of you.

Here are pairs of lines with the same little word. Run all three steps on each.

What was saidWhat the test shows
Ravi walked past the shop.Partner: the shop. Which way? Past it. A preposition with its partner.
A bus went past.No partner. 'Past' stands alone and still makes sense.
We ran around the park.Partner: the park. Which way? Around it. A preposition.
We looked around.No partner. 'Around' stands alone.
We played before lunch.Partner: lunch. When? Before it. A preposition.
We played before we ate lunch.A whole little sentence follows - 'we ate lunch'. 'Before' is joining two sentences here.

In every pair, the little word looks the same. The test shows what it is doing in that line.

Look at the last two rows. 'Before lunch' has a naming partner. 'Before we ate lunch' has a whole sentence after it, with its own doing word, 'ate'. When that happens, the little word is joining sentences - a job you will study in Craft.

Picture the little word as a person holding a rope, and the partner is tied to the other end. Step 1: find the rope and see what is tied to it. Step 2: ask what the rope is for - pulling something closer, keeping something under, going somewhere together. Step 3: cut the rope. If the person falls over, they needed the partner - that is a preposition. If they stay standing, they can manage alone. Some people always fall. Some can stand either way.

Some little words almost always need a partner: with, for, of, at, from, to, next to. Cut the rope and they fall every time. Others can go either way: inside, outside, up, down, past, around, behind, before, after. With a partner, they are prepositions. Without one, they are being used alone. Later in the chapter you will meet the names grammar books give to that alone use - and you will see that not everyone agrees on the name.

Here is a hard one, and it is fine to find it hard. 'Ravi looked up the tree.' 'Ravi looked up the word.' They look almost the same. Run the test. In the first line, 'up the tree' tells which way Ravi looked. 'The tree' is the partner of 'up'. Up the tree - a direction. In the second line, Ravi did not look in the direction of the word. He found it in a dictionary. 'Look up' is a doing word made of two pieces, and 'the word' is what he found. You can even say 'Ravi looked the word up', and it still makes sense. Try that with the tree - 'Ravi looked the tree up' - and it means something odd. So 'up' in the second line is not really holding a partner. It belongs to the doing word 'look'. Grammar calls this kind of 'up' a particle. You do not need to master this now. Practice has a whole section on it, and Master goes deeper still. For now, notice that the same word 'up' can point a direction - or be part of a doing word.

Can taking one partner away really change what a word is doing? 'Come inside the tent.' 'Come inside.' Both are invitations. The first names the tent. The second does not need to - everyone knows where 'inside' is. Try one more. 'I will see you after school.' 'I will see you after.' The second still works when you are talking about school already - 'after' stands alone and everyone fills in the partner. And one last one: 'Tom gave the ball to Ellie.' 'Tom gave the ball to.' The second is broken, and everyone listening asks 'To who?'. Some little words are happy to stand alone. 'To' never is.

The test tells you what a little word is doing in one line, not what it is forever. 'Up' can be a preposition in one sentence and stand alone in the next. That is normal. A word standing alone is not a mistake. 'She went outside' and 'Look it up' are good English. And a sentence ending in a little word is not a mistake either. 'What are you looking at?' is normal English - the partner, 'what', has just moved to the front. That comes back in Craft. So use the test to understand a line, never to mark natural English wrong.

  1. Step 1 - Find the partner. Find the little word, then the naming words it takes right after it.
  2. Stop the partner where it ends: under the table, not 'the table is asleep'.
  3. Step 2 - Name the relation. Ask where? when? which way? who with? what with? who for?
  4. Step 3 - Take the partner away. Say the line without it and listen.
  5. Broken? The word is working as a preposition.
  6. Still stands? The word is being used alone - and that is fine English.
  7. A whole sentence after the little word, with its own doing word? It is joining sentences - a job for later.
  8. Never mark natural English wrong just because a little word stands alone or comes at the end.
You now have the Preposition Test, and it works on any sentence. Step 1 - Find the partner: the little word and the naming words after it. Step 2 - Name the relation: where, when, which way, who with, what with, who for. Step 3 - Take the partner away. If the little word cannot stand without it, it is working as a preposition. If it still stands, it is being used alone. Some little words always need a partner: with, for, to, of, at, next to. Others can go either way: inside, up, past, around, before, after. If a whole sentence follows the little word - 'before we ate lunch' - it is joining sentences, a job taught in Craft. A word standing alone is not wrong, and neither is a sentence that ends with a little word. Next, what comes after the little word when the partner is a person: me or I?

With me, for her

When a person word is the partner of a little word, English uses a special set of person words.

Before the doing wordAfter a little wordExample
ImeCome with me.
hehimThis is for him.
sheherSit next to her.
weusWait for us.
theythemGive it to them.
youyouThis is for you.

Look at the last row. 'You' stays the same in both places, so it never causes trouble. 'It' stays the same too: 'Look at it.'

The partner test, with people. Find the little word and its partner, just as always. If the partner is a person word, it takes the after shape: with me, for her, to them. If there are two people, take one away and listen: 'for Ravi and me' - 'for me'.

So the Preposition Test still does the work. Step 1 finds the partner. If the partner is a person word, check its shape.

Here are some two-person partners. Use the trick: take the other person away and listen.

What was saidTake the other person away
This cake is for Ravi and me.'for me' - right.
This cake is for Ravi and I.'for I' - sounds wrong, so use 'me'.
Sit between Mira and her.'between ... her' - right.
Mum made lunch for Tom and us.'for us' - right.
The teacher spoke to Asha and him.'to him' - right.
Keep this between you and me.'between you and me' - the standard form.

With one person, your ears nearly always get it right. With two, the trick helps: remove the other person, and the right word pops out.

'Between' is a little different, because it always needs two. You cannot say 'between me' on its own. But 'between' is still a little word, so both people after it take the after shape: between you and me, between him and her, between us and them.

Picture every person word with two coats. One coat is for standing at the front of the sentence, before the doing word: I, he, she, we, they. The other coat is for standing after a little word: me, him, her, us, them. When a person walks through the door of a little word - with, for, to, between - they swap into the after coat. It does not matter how many people walk through together. Everyone who comes through the door wears the after coat.

The after coat works with every little word in this chapter, not just 'with' and 'for'. Under him, behind them, next to her, after us, before me, from you, like me, except him. It also works when the little word and its partner move to the front: 'For me, the best part was the cake.' 'With them, we always have fun.' The person still came through the door of a little word, so they still wear the after coat.

Here is a hard one, and it is fine to find it hard. Why do so many grown-ups say 'between you and I'? When they were children, many people were corrected for saying 'Me and Ravi went to the shop'. They were told: 'Say Ravi and I.' That was good advice for the front of the sentence, before the doing word. But some people learned a different lesson from it. They learned: 'and I' always sounds more correct than 'and me'. So they started saying 'and I' everywhere - even after a little word, where 'me' belongs. 'Between you and I.' 'For Ravi and I.' Grammar books call this trying so hard to be correct that you overshoot. It is not silly. It comes from trying to be careful. The standard form, the one exams and careful writing use, is still 'between you and me' and 'for Ravi and me'. You now have the trick that gets it right: take the other person away, and listen. Craft comes back to this with older examples.

Can one person word really change who is doing what? 'Mira and I made a card.' 'Mira made a card for me.' In the first, I helped make it. In the second, I am getting it. The person word changed coat because it moved to a different place - and the story changed with it. Try one more. 'She is standing next to Tom.' 'Tom is standing next to her.' The same two people, the same picture. But 'she' became 'her' because this time she is the partner of 'next to'. And one last one: 'Kabir shared his lunch with us.' Nobody ever says 'with we'. Your ears already knew the rule, long before you had a name for it.

Everyday speech is looser than exam English. You will hear 'between you and I' and 'for Mum and I' from careful, educated speakers. That is a real pattern in how people talk, and it is worth knowing about. In school work and exams, the standard form is 'me' after a little word. 'You' and 'it' never change coat, so they never cause this problem. And the front of the sentence is a separate question. 'Me and Ravi went' vs 'Ravi and I went' is about the person before the doing word, not after a little word. This section only covers partners.

  1. Find the little word and its partner, as always.
  2. If the partner is a person word, use the after coat: me, him, her, us, them.
  3. 'You' and 'it' stay the same, so they are always safe.
  4. If there are two people, take the other one away and listen: 'for Ravi and me' - 'for me'.
  5. After 'between', both people wear the after coat: between you and me.
  6. If the little word and partner move to the front, keep the after coat: 'For me, it was fun.'
  7. 'And I' is not always more correct. After a little word, it is 'and me'.
  8. Do not tease people who say 'between you and I'. Just know the standard form for your own writing.
You can now choose the right person word after a little word. When a person word is the partner of a little word, it takes the after shape: me, him, her, us, them. With me, for her, to them, next to him, wait for us. 'You' and 'it' stay the same in both places. When the partner has two people in it, take the other person away and listen: 'for Ravi and me' - 'for me'. That trick works every time. 'Between' always has two, and both take the after shape: between you and me. Many people say 'between you and I' because they learned that 'and I' sounds more correct. It comes from trying to be careful. The standard form for school and exams is still 'between you and me'. Next, a mixed review of everything in Discover.

First mixed review

This section mixes everything in Discover. Here is the whole toolbox on one page.

QuestionLittle wordsExample
where?in, on, at, under, behind, next to, betweenunder the bed, at the door
when?in, on, atin June, on Monday, at five o'clock
which way?into, onto, out of, across, through, alonginto the box, across the road
who with? what with? how? who for?with, by, forwith a friend, with a spoon, by bus, for Mum
what order?before, after, untilbefore school, until bedtime
The Preposition Test, every time. Step 1 - find the little word and its partner. Step 2 - name the relation. Step 3 - take the partner away: if it breaks, it is working as a preposition. Then say one sentence of why.

Two more checks from the band: the whole phrase moves in one piece, and a person partner wears the after coat - with me, for her, between you and me.

A good explanation names the little word, the partner, and the reason: 'on, because Monday is one day'.

Here are mixed lines with one-sentence explanations. Notice how each explanation names the little word, the partner, and the reason.

The lineOne-sentence explanation
The party is on Saturday.'On', because Saturday is one day.
The cat jumped into the basket.'Into', because the cat went from outside to inside - a journey.
Mei cut the paper with scissors.'With' tells what she used, because scissors are a tool.
We wash our hands before lunch.'Before', because the washing comes first and lunch comes later.
This is for Tom and me.'Me', because it is the partner of 'for' - take Tom away and it is 'for me'.
The dog is behind the sofa.'Behind the sofa' tells where; take the partner away and we no longer know behind what.

No explanation says 'because it sounds right'. Each one gives a reason you could check: the size of the time, the journey, the tool, the order, the coat, the partner.

That is the difference between knowing the answer and understanding it. The first gets one question right. The second gets the next hundred right.

Picture a detective's desk with five drawers. Drawer one: where words. Drawer two: when words. Drawer three: going-somewhere words. Drawer four: with, by and for. Drawer five: order words. On top of the desk sits one magnifying glass - the Preposition Test. When a sentence arrives, you hold up the glass, find each little word and its partner, and decide which drawer it belongs in. Then you write one line in your notebook saying why.

A single line can hold four or five little words, each from a different drawer. 'After lunch, Kabir walked across the playground with his friend to the gate.' After lunch is order, across the playground is a journey, with his friend is company, and to the gate is where the journey ends. The longer the line, the more useful the test becomes. Take the words one at a time, find each partner, and the line sorts itself out.

Here is a hard one, and it is fine to find it hard. 'The girl ran up the hill with the kite.' Run the test on every little word. 'Up the hill' - partner: the hill; which way? up it. 'With the kite' - partner: the kite. But what does 'with the kite' tell? Maybe the girl is carrying the kite as she runs - she is running with it. Or maybe it tells which girl - the girl with the kite, not the girl with the ball. Both pictures fit the words. Now a different puzzle: 'The girl ran up.' No partner after 'up'. Take-away test: it still stands. So here 'up' is being used alone - and that is good English. This line shows why the test matters. Words like 'up' change job from line to line, and phrases like 'with the kite' can hook on to more than one word. You do not have to settle every case now. Craft comes back to phrases that could belong to two words. For now, notice when a line has two pictures, and say so in your explanation.

Can the same little words tell two different stories in one line? 'Ravi put the cake on the table in the kitchen.' 'Ravi put the cake in the kitchen on the table.' The same little words, the same partners, and nearly the same picture. Moving the phrases around changed what you hear first, but the cake still ended up in the same place. Now try one where a single swap changes everything. 'The shop is closed until Monday.' 'The shop is closed on Monday.' With 'until', it is closed now and opens on Monday. With 'on', it is only closed on Monday - so you can go today. One little word from a different drawer, and your whole shopping plan changes. And one last pair: 'Mira went to the fair with me.' 'Mira went to the fair for me.' One Mira had company. The other ran an errand.

This review uses only what Discover taught. Some things you might notice in real sentences are waiting for later bands: 'at night' and 'on the bus' as habits, 'since' and 'for' for how long, 'good at' and 'afraid of' as fixed pairs, and 'before we ate' as a joining word. If a line seems to break a Discover rule, it may be one of those. That is not a reason to doubt the rule - it is a sign of what Practice will teach next. And remember: a little word standing alone, or a sentence that ends in one, is still good English.

  1. Read the whole line once before tapping anything.
  2. Find every little word, one at a time, and its partner.
  3. Name the relation: where, when, which way, who with, what with, how, who for, what order.
  4. For in, on and at, ask two questions: is it place or time? Then box, table or door - or big stretch, one day, one spot?
  5. For a moving thing, check whether it is staying or going.
  6. For 'with', look at the partner: person or tool?
  7. For a person partner, use the after coat. With two people, take one away.
  8. Explain in one sentence with a reason you could check - never just 'it sounds right'.
You have finished Discover, and you can now find and explain the little words in any everyday sentence. Where words tell where one thing is from another: in, on, at, under, behind, next to, between. In, on and at tell when too: a big stretch, one day, one clock spot. Going-somewhere words show which way: into, onto, out of, across, through, along. With, by and for bring in a friend, a tool, a way of travelling or someone it is meant for. Before, after and until put things in order. The little word and its partner make one phrase that moves in one piece. The Preposition Test - find the partner, name the relation, take the partner away - works on any line. And a person partner wears the after coat: with me, for her, between you and me. Most of all, you can explain your answer in one sentence. That is the habit Practice builds on.

Building accuracy · ages 8–12

In, on, at for time - the full set

The spatial picture still does the work: in a container, on a surface, at a point. For time, the container is a long stretch, the surface is a single day, and the point is a moment on the clock.

Size of the timePrepositionExamples
Long stretch - months, years, seasons, centuries, parts of the dayinin June, in 2015, in the monsoon, in the morning, in the evening
One day - day names, dates, a named day plus its partonon Monday, on 4 July, on Diwali, on Monday morning, on the morning of the exam
A point - clock times and a few fixed phrasesatat six, at noon, at midnight, at night, at New Year
The time word already points - this, next, last, everyno prepositionnext week, last Friday, this evening, every summer

Two small checks settle nearly every case:

This is the Preposition Test pointed at time: find the partner - 'Monday morning', 'night', 'next week' - and ask what size of time it names; if the partner already points by itself, no preposition is needed.

In the morning, but on Monday morning. At night, but next week with nothing at all.

Some time phrases are fixed by habit rather than by the picture, and some are different in British and American English. Both columns below are standard where they are used.

PhraseWhat to know
at night / in the nightBoth exist. 'At night' is night in general: 'owls hunt at night'. 'In the night' usually means during one particular night: 'the baby woke in the night'.
at the weekend / on the weekend'At the weekend' is usual in British English, 'on the weekend' in American English. Neither is a mistake.
on Diwali / at Diwali'On' names the day itself. 'At' names the festival as a season, and is more common in British English: 'we visit family at Christmas'.
on time / in time'On time' means at the planned moment; 'in time' means early enough. Craft returns to these.

And one pattern to recognise without copying it. In Indian English you will often hear 'on tomorrow' or 'on next Monday'. Speakers are carrying the day rule one step too far. The exam-standard form drops the preposition: 'tomorrow', 'next Monday'. The same goes for 'yesterday', 'today' and 'tonight', which already point at a day and take no preposition.

If the time word can point by itself - next, last, this, every, today, tomorrow - let it.

Picture a calendar page. A whole month or a season is a big box you are standing in - in June, in the monsoon. A single square on the page is a surface you step on - on Monday, on 4 July, and 'Monday morning' is still that same square. A clock time is a pin stuck in one spot - at six, at midnight. And 'next week' is a finger already pointing at the page, so it needs no box, surface or pin.

The most specific part of the phrase decides. 'In 2015' is a year - a container. 'In June 2015' is still a month. But 'on 4 June 2015' names one day, so 'on' takes over even though the year is there too. 'In the morning' is a part of any day; 'on Monday morning' and 'on a cold morning' fix it to one particular day or one described morning. Look for the smallest unit named, and let that unit choose the preposition.

Here is a case worth slowing down for. 'I will see you at the weekend.' 'I will see you on the weekend.' 'I will see you this weekend.' The third is the easiest: 'this' already points, so there is no preposition, and it is standard everywhere. The first two are harder, because neither is wrong. 'At the weekend' is the usual British form - it treats the weekend as a point, like 'at Christmas'. 'On the weekend' is the usual American form - it treats the weekend like a day, 'on Saturday'. Both follow the picture; they just picture the weekend differently. Australians often say 'on the weekend' too, and 'over the weekend' is common everywhere when you mean the whole stretch. So the honest answer is not 'one is right'. It is: pick one form and use it consistently in a piece of writing, know that a reader from the other variety will understand you perfectly, and never mark the other one as an error. What is wrong in every variety is 'on this weekend' or 'at next weekend' - that is the pointing-word rule, and it does not change with the country.

Watch one preposition change how many nights you mean. 'Mira hears the dogs bark at night.' 'Mira heard the dogs bark in the night.' The first is a habit. Night after night, the dogs bark and Mira hears them - 'at night' is night in general. The second is one event. Some time during one particular night, Mira woke and heard them - 'in the night' is inside a single night. The same thing happens with 'in time' and 'on time'. 'The train arrived on time' means at the planned minute. 'We reached the station in time' means early enough to catch it - maybe with a minute to spare, maybe with an hour. One small word, and the sentence moves from a habit to a single night, or from exactly right to early enough.

The picture explains most time phrases, not all of them. 'At night' is fixed by habit - by the pattern, you might expect 'in the night' for all uses, and English happens to use both. 'Last' and 'next' behave differently when 'the' comes first. 'Next Monday' takes no preposition, but 'on the next Monday of the month' does, because 'the next Monday' is now a noun phrase naming one day. The same goes for 'in the last week of June'. And festival phrases vary. 'On Eid' and 'at Eid', 'on Christmas Day' and 'at Christmas' are all standard; they differ in whether you mean the day or the season.

  1. Find the partner first - the time word or phrase after the gap.
  2. Ask its size: a long stretch takes 'in', one day takes 'on', a point takes 'at'.
  3. If a day is named anywhere in the phrase - 'Monday morning', 'the morning of the exam' - use 'on'.
  4. If this, next, last, every, today, tomorrow or yesterday leads the phrase, use no preposition at all.
  5. Keep 'at night' for night in general and 'in the night' for one particular night.
  6. In one piece of writing, pick 'at the weekend' or 'on the weekend' and stay with it; never mark the other one wrong.
  7. For a festival, use 'on' for the day itself and 'at' for the season around it.
You can now choose a preposition for any time phrase in a school week. In is for long stretches: months, years, seasons, and the parts of the day - in June, in 2015, in the morning. On is for one day: day names, dates, and a named day with its part - on Monday, on 4 July, on Monday morning. At is for points: clock times, noon, midnight, and the fixed phrase at night. No preposition at all when this, next, last or every leads, or with today, tomorrow and yesterday: next week, last Friday, every summer. And some pairs are both standard: at the weekend in British English, on the weekend in American English; at night in general, in the night for one night.

In, on, at for places - the full set

The same three pictures, with two extra questions for buildings and vehicles.

PlacePrepositionWhy
at home, at school, at work, at universityatthe place as an activity - being a pupil, doing your job, living there
in the school, in the kitchen, in the hallinthe building or room as a container - inside the walls
on the bus, on the train, on the plane, on a bicycleontransport you ride on top of, or can stand and walk about on
in the car, in a taxi, in the liftina small space you sit inside
at the station, at the gate, at the cornerata point on a journey - where you meet, stop or change
in Delhi, in India, in the villageintowns, countries and areas are containers

Two questions settle nearly every case:

This is the Preposition Test for places: find the partner - 'school', 'the bus', 'the station' - and ask which picture it is being seen as: a container, a surface, or a point.

At school, but in the school hall. On the bus, but in the car.

A few place phrases differ between British and American English. Both columns are standard where they are used.

British EnglishAmerican EnglishWhat it means
in hospitalin the hospitalstaying there as a patient
at universityin college / at collegebeing a student
in the streeton the streetout on the road outside
at the weekendon the weekend(the time pair from the last section)

Indian English usually follows the British forms - 'in hospital', 'at university' - but you will also hear 'in the bus' and 'in the train'. That is a real pattern, and people understand it. The exam-standard forms in every major variety are 'on the bus' and 'on the train'.

And 'the' matters. Without 'the', a place like school, hospital, prison, church or bed is about its purpose: 'in bed' means resting or sleeping; 'at school' means studying. With 'the', it becomes a particular building or object: 'the cat is on the bed', 'the parents met in the school'.

No 'the' - you mean the purpose. With 'the' - you mean the place itself.

Picture a town from above. Each building has two faces: its walls and its purpose. 'In the school' puts you inside the walls; 'at school' puts you in the purpose - a pupil at a desk. Vehicles are either platforms or boxes: a bus is a long floor you can walk along, so you are on it; a car is a small box you fold into, so you are in it. And a station is a pin on the map, a point where journeys meet, so you are at it.

The same place can be seen in two ways, and the preposition shows which. 'The train stops at Agra' treats Agra as a point on a line - a stop. 'My cousin lives in Agra' treats it as a container you live inside. 'Meet me at the station' is a point where two journeys join; 'it was cold in the station' is the inside of the building. The place did not change. What changed is the picture the speaker is using, and the preposition carries that picture into the sentence.

Here is a case worth sitting with. 'Priya is at school.' 'Priya is in school.' 'Priya is in the school.' The first is about her role. She is a pupil, it is a school day, and that is where she is. It is standard everywhere. The third is about the building. She might be a pupil, a visiting parent or a plumber - she is inside the walls. The middle one is the hard one, because it means different things in different places. In American English 'she is in school' usually means she is still a student - not yet working - or that school is in session. In British English 'in school' is more often about being inside the building or during school hours: 'the children are in school until three'. So the honest answer is not 'one is right'. 'At school' is the safe form for being a pupil in every variety; 'in the school' is the safe form for the building; and 'in school' is standard, but read it with the variety in mind.

Watch one small word change why someone is somewhere. 'Ravi is in hospital.' 'Ravi is at the hospital.' The first says Ravi is a patient. He is ill, and he is staying there - 'in hospital' with no 'the' is about the hospital's purpose. The second tells you only where he is. He might be a patient, but he might be visiting his grandmother, or he might be a doctor finishing a shift - 'at the hospital' is a point on the map. The same thing happens with 'in bed' and 'on the bed'. 'Kofi is in bed' means he is resting or asleep, under the covers. 'Kofi is on the bed' means he is sitting or lying on top of it, maybe reading, fully dressed. One preposition, one article, and a sick friend becomes a visitor.

The vehicle rule is a strong habit, not a law of physics. You are 'in a small boat' but 'on a ship'; 'in a lorry' if you mean the cab and 'on a lorry' if you mean the load. A cycle rickshaw is ridden 'on', an auto-rickshaw is often sat 'in'. 'At' for a building is also used when the building is where something happens, not only for fixed phrases: 'at the cinema', 'at the dentist's', 'at Kabir's house'. And 'in the street' and 'on the street' are both used in British English, with 'on' usual in American English. No exam key should mark either wrong.

  1. Find the partner - the place after the gap - and ask which picture it is: container, surface or point.
  2. For a school, hospital, home or workplace, ask: do I mean the purpose or the building? Purpose often takes 'at' or no 'the'; the building takes 'in the'.
  3. For transport, ask: can I stand and walk about on it, or do I sit inside a small space? Bus, train, plane - on. Car, taxi - in.
  4. Use 'in' for towns, cities and countries; use 'at' only when the town is a stop on a route.
  5. Use 'at home' for where you are, never 'in home'.
  6. Keep 'in hospital' (British) and 'in the hospital' (American) as a pair; in one piece of writing, choose one.
  7. In exams, write 'on the bus' and 'on the train', and recognise 'in the bus' as a pattern people use in speech.
You can now choose in, on or at for the places a school day moves through. At is for a place seen as an activity or a point: at home, at school, at work, at the station, at the gate. In is for a container: in the kitchen, in the school hall, in Delhi, in India - and for small vehicles you sit inside: in the car, in a taxi. On is for a surface - and for big transport you ride or walk about on: on the bus, on the train, on the plane, on a bicycle. No 'the' often means the purpose: in hospital, in bed, at school. With 'the', you mean the building or the object. And some pairs are both standard: in hospital in British English, in the hospital in American English; in the street and on the street.

Since, for, during, by, until

Five words, and each one wants a different kind of partner.

WordIts partnerExampleWhat it tells you
sincea point in the pastsince Monday, since 2020, since breakfastwhen something started - it is still going on
fora length of timefor three days, for an hour, for yearshow long it lasts or lasted
duringa named period or eventduring the film, during the holidayswhen - somewhere inside that period
bya point - a deadlineby Friday, by six o'clockno later than that point
untila point - an enduntil Friday, until six o'clockit continues right up to that point, then stops

Two checks settle nearly every case:

This is the Preposition Test pointed at time: find the partner - 'Monday', 'three days', 'the film' - and ask whether it names a point, a length or a period; the answer chooses the word.

Since Monday, for three days. By Friday means no later; until Friday means all the way to.

Some patterns are common in speech but not in the exam standard, and some pairs are easy to mix.

You may hearWhat is happeningExam-standard form
I am here since two years.'Since' with a length, and 'am' for a state that began in the past. A widespread Indian English pattern.I have been here for two years.
I know him since long.'Since long' is an Indian English phrase for 'for a long time'.I have known him for a long time.
Finish it until Friday.'Until' used for a deadline; common where a first language has one word for both, like Hindi 'tak' or German 'bis'.Finish it by Friday.
I slept during three hours.'During' with a length rather than a named period.I slept for three hours.

Since and for usually go with the perfect tense - 'have lived', 'has been' - when the action is still going on: 'Ravi has lived in Mumbai for three years' means he still lives there. With the simple past, 'for' is fine and 'since' is not: 'Ravi lived in Pune for two years' (and then moved).

And 'till' is an ordinary, standard short form of 'until' - not a mistake. 'Til' with one l is informal.

'Since two years' describes a real pattern. The standard form says 'for two years'.

Picture a timeline across the board. Since is a pin stuck in the past with an arrow running from it to now. For is a ruler laid along the line - it measures, it does not point. During is a box drawn round a named stretch, like 'the film', with a dot somewhere inside it. By is a wall: the thing must happen anywhere before it. Until is a long bar that runs right up to the wall and stops there.

The same partner can take different words, and each tells you something different. 'Priya worked for the holidays' is odd; 'Priya worked during the holidays' says when - some time inside that period. 'Priya worked through the holidays' says the whole time, start to end. 'Priya has worked since the holidays' says it began then and is still going on. One partner, four prepositions, four different pictures of the same stretch of time - and each one is a choice about what you want the reader to see.

Here is a pair that confuses careful speakers, because 'not' turns it round. 'I will finish the project by Friday.' 'I will not finish the project until Friday.' The first is a promise about the latest day: any time up to Friday, maybe Wednesday. The second looks like the opposite, but it means something close: Friday is the earliest day. 'Not until' means 'not before'. The work goes on, unfinished, all the way up to Friday, and then it is done. Now try 'I will not finish by Friday.' That means Friday will pass and the work will still be unfinished. So 'not until Friday' and 'not by Friday' are nearly opposites, even though 'by' and 'until' can both point at Friday. The trick is to ask the section's question: is this a deadline for something that happens once (by), or a stretch that continues up to a point (until)? With 'not until', the stretch is the time before the thing happens.

Watch one small word change the length of a wait. 'Stay in the classroom until the bell.' 'Be in the classroom by the bell.' The first keeps you there. You might have been there since nine, and you cannot leave before the bell rings. The second only asks you to arrive. You can walk in at any moment before the bell - one minute before, or an hour before. The same thing happens with since and for. 'Arjun has been ill since Tuesday' tells you when it started, and you work out the length. 'Arjun has been ill for two days' tells you the length, and you work out the start. Same illness, same days - one sentence gives you a pin, the other gives you a ruler.

'Since' and 'until' are not only prepositions. 'Since I was five' and 'until we left' have a whole clause after them, so there they are joining clauses - the Preposition Test's last question. 'Since' can also mean 'because': 'since it was raining, we stayed in'. 'For' has many other jobs - 'a gift for Mum', 'wait for the bus'. In this section it is only the time job. And American English often uses 'through' for an inclusive range - 'Monday through Friday' - where British English says 'Monday to Friday' or 'from Monday until Friday'. Both are standard.

  1. Find the partner first - the time word or phrase after the gap.
  2. If you can put a pin in it (Monday, 2020, breakfast), it is a point: since for a start, by for a deadline, until for an end.
  3. If you can measure it (three days, an hour, a long time), it is a length: use for.
  4. If it is a named period or event (the film, the holidays), use during to say when inside it.
  5. For a task with a deadline, write by. For something that keeps going, write until.
  6. With since and for about something still going on, use the perfect: 'have lived', 'has been'.
  7. Recognise 'since two years' and 'since long' as real patterns, and write 'for two years' and 'for a long time' in exams.
You can now choose among five time words by looking at the partner. Since takes a point in the past and says when something started: since Monday, since 2020. For takes a length and says how long: for three days, for a long time. During takes a named period and says when inside it: during the film, during the holidays. By takes a point and makes it a deadline: by Friday means no later than Friday. Until takes a point and keeps something going right up to it: until Friday means all the way to Friday. 'Since two years' is a common pattern; the standard form is 'for two years'. And 'not until' means 'not before'.

Between, among, across, through

Two pairs, and each word has its own picture.

WordIts pictureExamples
betweenseparate, named items, linked one by onebetween her two cousins; a treaty between three countries; choose between tea, coffee and juice
amonginside a group or mass you do not count outamong the crowd; among friends; a ring lost among the stones
acrossover a surface or a line, from one side to the otheracross the road; across the bridge; across the page
throughinside a space, in one end and out the otherthrough the tunnel; through the forest; through the door

Two questions settle nearly every case:

This is the Preposition Test at work: find the partner - 'three countries', 'the crowd', 'the tunnel' - and ask what relation the word names between it and the rest of the sentence; the picture of the partner, not its size, chooses the word.

Between links items one by one - two or twenty. Among sits inside a group.

Here is where the 'two versus many' rule came from, and where it breaks.

SentenceStandard?Why
a treaty between three countriesYeseach country agrees with each other country - separate links
the difference between red, blue and greenYeseach colour is compared with each other colour
the money was shared among the villagersYesthe villagers are a group, not named one by one
Mira stood among her two friendsNotwo named people with Mira in the middle - 'between'
this is a secret among you and meNotwo named people - the fixed phrase is 'between you and me'

So the rule is right in one direction: two items almost always take 'between'. It is wrong in the other: more than two can take 'between' too, whenever each item is seen separately. Usage guides have said this for more than a century.

Across and through also meet in the middle. 'Walk across the field' pictures a flat surface. 'Walk through the field' suggests something around you - tall grass or a crop. Both are standard; they draw different pictures.

'Amongst' is a standard British variant of 'among', a little more formal.

Picture a set of dots joined by strings. If you can draw a string from each dot to each other dot - India to Nepal, Nepal to Bhutan, Bhutan to India - that is 'between'. If the dots are a cloud and you are one more dot somewhere inside it, that is 'among'. Now picture a road and a tunnel from the side: across is a line drawn over the top of the road, and through is a line drawn inside the tunnel with walls above and below it.

The same group can take either word, depending on how you want the reader to see it. 'The prize was shared between Asha, Ravi and Priya' names each winner and suggests three separate shares. 'The prize was shared among the winners' treats them as a group, with no names. Neither sentence is more correct. The first draws strings from person to person; the second draws a circle round the group. Choosing the preposition is choosing the picture - which is the whole move of Practice.

Here is a case where both answers are standard, and the reason matters more than the answer. 'The four friends divided the pizza between them.' 'The four friends divided the pizza among them.' The count-rule says the first is wrong - four is more than two. It is not wrong. Many careful writers use 'between' here, and dictionaries record it. The second is also standard, and some people prefer it because the friends are a group. So what decides? The picture. 'Between' suggests four separate shares, each friend with a slice, perhaps agreed piece by piece. 'Among' suggests the pizza went round the group without anyone counting shares. The honest answer is: both are standard, a teacher may prefer one, and no answer key should mark either wrong on the count alone. What is non-standard is 'among' with two named items - 'among Ravi and Mira' - and 'between' with one mass word that has no separate parts, like 'between the crowd'.

Watch one preposition change what someone did with a field. 'Kabir walked across the field.' 'Kabir walked through the field.' The first draws a line over a flat surface. Maybe it is a football pitch; Kabir crossed it from one side to the other and could see all around. The second puts something around him. Maybe it is a field of sugarcane taller than his head, and he pushed his way in one end and out the other. The same thing happens with between and among. 'The letter was hidden between the books' means it was slipped into a gap, with a book on each side. 'The letter was hidden among the books' means it was somewhere in the pile, mixed in with them. One word, and a flat field becomes a forest of cane, and a gap becomes a pile.

'Between' is also used for time and ranges: 'between two and four o'clock', 'between 10 and 20 marks'. There it marks two ends of a stretch. 'Across' has another meaning - on the other side of: 'the shop across the road' is not moving at all. And 'across the country' can mean all over it: 'schools across India'. 'Through' can also mean 'from start to end' in time - 'she slept through the storm' - and, in American English, 'up to and including': 'Monday through Friday'.

  1. Find the partner - the noun phrase after the gap.
  2. For between or among, ask: are the items named and linked one by one, or a group seen as a mass? One by one - between, whatever the number. A group - among.
  3. With two named items, use between. Keep 'between you and me' as the fixed phrase.
  4. For across or through, ask: am I on top of a surface, or surrounded by a space? On top - across. Surrounded - through.
  5. Do not change 'between' to 'among' just because the number is three or more.
  6. When both words are standard, choose the one that draws the picture you want the reader to see.
  7. Recognise 'amongst' as a standard British variant, a little more formal than 'among'.
You can now choose between, among, across and through by the picture, not by a count. Between links separate, named items one by one - two items, or more: between her two cousins, a treaty between three countries, choose between tea, coffee and juice. Among puts something inside a group seen as one mass: among the crowd, among friends, among the stones. Across goes over a surface or line, side to side: across the road, across the bridge. Through goes inside a space, in one end and out the other: through the tunnel, through the forest. The 'two versus many' rule is half true - two takes between, but more than two can take between as well. And where both words are standard, the one you choose tells the reader how to see the group.

Good at, afraid of, keen on

These are chunks: learn the adjective and its partner together, the way you learn a word's spelling.

PartnerCommon adjectivesExample
atgood at, bad at, brilliant at, surprised atAsha is good at chess.
ofafraid of, proud of, fond of, full of, tired of, capable of, aware ofRavi is afraid of dogs.
ininterested in, involved in, rich inPriya is interested in space.
onkeen on, dependent onTom is keen on football.
forresponsible for, famous for, ready for, sorry forOlivia is responsible for the plants.
aboutworried about, excited about, nervous about, angry aboutJames is nervous about the test.
withangry with (a person), good with, pleased with, bored withNoor was angry with her brother.
tokind to, similar to, used to, married toMira is kind to animals.

Two habits make them stick:

This is the Preposition Test with one honest change: you still find the partner - 'chess', 'dogs', 'space' - but here it is the adjective, not a picture, that chooses the preposition, so you learn the pair as one piece.

Not every choice has a picture. Some are habits, and habits are learned as chunks.

Some adjectives take more than one partner, and the partner changes the meaning.

PairMeaningExample
good at / good with / good forskilled in / able to handle / healthy or useful forgood at maths; good with children; good for your teeth
angry with / angry aboutcross with a person / cross about a thingangry with Ravi; angry about the noise
tired of / tired fromfed up with / worn out bytired of waiting; tired from the long walk
sorry for / sorry aboutpity for someone / regret about somethingsorry for the lost puppy; sorry about the mess

And some adjectives take two partners with the same meaning, both standard. 'Bored with' and 'bored by' are the traditional forms; 'bored of' is newer, very common in British speech, and increasingly written. 'Angry at' a person is also standard, especially in American English. 'Different from', 'different than' and 'different to' are a famous case that Craft looks at closely.

Where two partners are both standard and mean the same, no exam key should mark either one wrong unless the question names a register.

If the partner changes the meaning, choose by meaning. If it does not, both are standard.

Picture each adjective as a key with a small tag tied to it. 'Afraid' always comes with an 'of' tag; 'interested' comes with an 'in' tag; 'keen' with an 'on' tag. You do not work out the tag - you read it off the key. A few keys, like 'good', carry two or three tags on one ring - at, with, for - and each tag opens a different door.

Adjective partners often come in families that share a partner, and that makes them easier to learn. Fear words take 'of': afraid of, scared of, frightened of, terrified of. Worry words take 'about': worried about, anxious about, nervous about. Skill words take 'at': good at, bad at, brilliant at, hopeless at. Learning one member of a family gives you a strong guess for the others - not a guarantee, because 'keen' takes 'on' though 'eager' takes 'for', but a much better start than guessing blind.

Here is a case where the partner decides the meaning, and it catches careful writers. 'Kabir is good at children's books.' 'Kabir is good with children.' 'Stories are good for children.' The first says Kabir has a skill: he writes or chooses children's books well. 'Good at' is for skills and subjects. The second says he has a way with them: children like him, and he knows how to handle them. 'Good with' is for people, animals and tools - 'good with his hands', 'good with numbers'. The third says stories benefit children. 'Good for' is for what does you good. Now the hard part. 'Good with numbers' and 'good at maths' mean almost the same. So a picture will not tell you which one to use; the partner of 'good' is chosen by the noun after it and by habit. The honest advice is to learn the three as three separate chunks, each with a typical partner: good at a subject, good with people and tools, good for your health.

Watch one preposition move the anger from a person to a thing. 'Noor was angry with her brother.' 'Noor was angry about her brother.' In the first, the brother is the one she is cross with. He did something, and her anger is aimed at him. In the second, the brother is the subject of her anger. Maybe someone was unkind to him, and she is upset about what happened to him - she might not be cross with him at all. The same thing happens with 'sorry'. 'Arjun felt sorry for the new boy' means he pitied him. 'Arjun was sorry about the new boy's bag' means he regretted something - maybe he was the one who tore it. One small word, and a brother goes from the target of the anger to the reason for it.

Chunks are habits, and habits vary. 'Good in' is also heard for school subjects, especially in American English ('she's good in math'). 'Angry at' is common for people in American English, where British English prefers 'angry with'. Some adjectives take different partners in different meanings, and a small dictionary may list only one. When you meet a new adjective, check a learner's dictionary, which usually prints the partner beside the word. And a partner is not always a preposition phrase. 'Afraid to jump' and 'keen to help' take a to-verb instead, with a slightly different meaning: 'afraid of jumping' is fear of the act, 'afraid to jump' is too scared to do it.

  1. Learn each adjective with its partner as one chunk: afraid of, keen on, good at.
  2. Use families to guess: fear words take 'of', worry words take 'about', skill words take 'at'.
  3. When an adjective can take two partners, ask whether the meaning changes. If it does - good at, good with, good for - choose by meaning.
  4. If two partners mean the same and both are standard - bored with, bored of; angry with, angry at - accept both, and choose the more formal one in formal writing.
  5. Watch for partners carried across from your first language, such as 'afraid from' or 'married with'.
  6. Check a learner's dictionary for any new adjective; it prints the partner.
  7. Say the chunk in a real sentence three times - that is how it sticks.
You can now use the standard partner after the common adjectives, and you know why there is no picture to lean on. These pairs are conventions: English fixes them by habit, and you learn the adjective and its partner as one chunk. Common chunks: good at, bad at; afraid of, proud of, fond of, full of, tired of; interested in; keen on; responsible for, famous for; worried about, nervous about; angry with, pleased with; kind to, similar to. Some adjectives take two partners with different meanings: good at a skill, good with people, good for your health; angry with a person, angry about a thing; tired of waiting, tired from a walk. And some take two partners with the same meaning, both standard: bored with, bored by, bored of; angry with, angry at.

Depend on, listen to, arrive at

Learn these as verb + partner, the way you learned adjective + partner.

PartnerCommon verbsExample
ondepend on, rely on, insist on, concentrate onIt depends on the weather.
tolisten to, belong to, reply to, talk to, happen to, apologise to (a person)This pencil belongs to Ellie.
forwait for, look for, ask for, pay for, apologise for (a thing)We waited for the bus.
atlook at, laugh at, stare at, arrive at (a building or point)James laughed at the joke.
inarrive in (a city or country), believe in, succeed inThe train arrived in Kolkata.
about / ofthink about, think of, dream about, complain aboutOlivia thinks about her grandmother.

A few partners follow the pictures you already know:

This is the Preposition Test with the same honest change as the last section: find the partner - 'the weather', 'the radio', 'the bus' - and notice that the verb, more often than a picture, chooses the preposition in front of it.

Arrive at a point, arrive in a place. Depend on, listen to, wait for - learn the pair.

Some verb patterns are common in speech, especially in Indian English, and have a different exam-standard form.

You may hearWhat is happeningExam-standard form
I can't cope up with this.An extra 'up', perhaps from 'keep up with' and 'put up with'. A widespread Indian English pattern.I can't cope with this.
We arrived to the station.'To' carried over from 'go to' and 'come to'.We arrived at the station.
It depends of the weather.'Of' carried over from languages like French or Spanish, where the word for 'depend' takes 'de'.It depends on the weather.
Please reply my email.The partner dropped.Please reply to my email.

And some verbs take two partners with different meanings. 'Apologise to' takes the person; 'apologise for' takes the thing: 'Mira apologised to her teacher for the noise.' 'Think of' is often a quick idea or an opinion ('what do you think of it?'); 'think about' is often longer consideration ('I'm thinking about the offer'). 'Look at' is seeing, 'look for' is searching, 'look after' is caring for.

A different partner can be a different verb. Look at, look for, look after.

Picture each verb as a train engine with one carriage always hooked on behind it. 'Depend' pulls an 'on' carriage, 'listen' pulls a 'to', 'wait' pulls a 'for'. The noun rides in the next carriage along. A few engines, like 'look' and 'apologise', can hook on different carriages - and each carriage takes the train somewhere different.

Verb partners are easier to remember when you group them by meaning. Many 'needing' verbs take 'on': depend on, rely on, count on. Many 'wanting' verbs take 'for': wait for, look for, ask for, hope for. Many 'sending towards' verbs take 'to': listen to, talk to, reply to, write to. As with adjectives, the families are strong guesses, not laws - 'belong to' has no sending in it - but a verb that means needing, wanting or turning towards has a good chance of the family partner.

Here is a verb where the picture does help, and where careful writers still slip. 'Kofi arrived at the stadium.' 'Kofi arrived in Accra.' 'Kofi arrived at Accra airport.' 'The train arrived at Accra.' The first uses the point picture: a stadium is a building, a spot you reach. The second uses the container picture: a city is an area you are now inside. The third is still a building, so 'at'. And the fourth is the tricky one: a train arriving at a city treats the city as a stop on a line - a point on the route. It is standard, and so is 'the train arrived in Accra'. Both work; they draw different pictures. What never works is 'arrive to'. 'Go to' and 'come to' take 'to' because they point along a path, but 'arrive' describes the moment you are there, so it takes the preposition of being there - at or in. So the honest rule is: 'arrive in' a city, country or area; 'arrive at' a building or a point; and 'arrive at' a city only when it is a stop on a route.

Watch one small word change what someone is doing with their eyes. 'Noor looked at her little brother.' 'Noor looked for her little brother.' 'Noor looked after her little brother.' In the first, he is right there, and she is seeing him. In the second, he is missing, and she is searching. In the third, she is caring for him - maybe all afternoon, while their parents were out - and she may not have been looking at him every minute. The same thing happens with 'apologise'. 'Arjun apologised to Mira' tells you who received the apology. 'Arjun apologised for Mira' tells you he was saying sorry on her behalf, for something she did. One small word, and a brother goes from standing in front of Noor, to missing, to in her care.

Some verb partners differ between varieties. In American English, 'wait on' can mean 'wait for' in informal speech ('we're waiting on the results'); everywhere, 'wait on' also means 'serve', as in a restaurant. In British English, 'write to someone' keeps its 'to'; in American English, 'write someone' is also standard. 'Think of' and 'think about' overlap a great deal, and many sentences allow either. No key should mark one wrong unless the meaning is fixed. And some 'verb + small word' pairs are phrasal verbs, where the small word is a particle, not a preposition: 'look the word up'. That difference is the subject of section 19.

  1. Learn each verb with its partner as one chunk: depend on, listen to, wait for.
  2. For 'arrive', use the place pictures: at a building or point, in a city or country - never 'to'.
  3. Group verbs by meaning to guess: needing takes 'on', wanting takes 'for', turning towards takes 'to'.
  4. When one verb takes several partners - look at, look for, look after - choose by meaning, because each is a different verb.
  5. Check you have not dropped a partner: reply to, listen to, wait for.
  6. Recognise 'cope up with' and 'arrive to' as patterns, and write 'cope with' and 'arrive at' in exams.
  7. When a verb is new, check a learner's dictionary, which prints the partner beside it.
You can now use the standard partner after the common verbs, and you know which ones have a picture behind them. Most verb partners are chunks: depend on, rely on, listen to, belong to, reply to, wait for, look for, ask for, pay for, laugh at, think about. A few follow the place pictures: arrive at a building or point, arrive in a city or country, and never arrive to. Some verbs take different partners with different meanings: look at, look for, look after; apologise to a person, apologise for a thing. Some patterns have a different exam-standard form: cope up with becomes cope with; reply my email becomes reply to my email; depend of becomes depend on. And a few verbs take no partner at all - which is where Practice goes next-but-one.

A reason for, a solution to

Learn each noun with its partner, as one chunk.

PartnerCommon nounsExample
forreason for, need for, respect for, demand forWhat is the reason for the delay?
tosolution to, answer to, key to, damage to, invitation to, visit toRavi found the answer to the riddle.
ininterest in, rise in, increase in, change inPriya has an interest in birds.
ofadvantage of, cause of, lack of, example of, fear ofThe cause of the fire was a spark.
about / ondiscussion about, information about, advice on, a book onWe had a discussion about plastic.
witha problem with, a relationship withThere is a problem with the printer.

Two checks keep you safe:

This is the Preposition Test once more: find the partner - 'the delay', 'the riddle', 'birds' - and notice that here the noun in front, not a picture, chooses the preposition that links them.

A reason for, a solution to, an interest in, the advantage of - and married to.

The pairs where the verb and the noun disagree are worth learning as pairs.

Verb (no preposition)Noun or adjective (with a partner)
We discussed the plan.We had a discussion about the plan.
She lacks sleep.She has a lack of sleep.
Tom's aunt married a doctor.She is married to a doctor. Her marriage to him.
The teacher emphasised spelling.The teacher put an emphasis on spelling.
They approached the gate.The approach to the gate was muddy.

Read across each row. The verb takes its object directly, and the noun needs a preposition to link to the same object. People who learn the noun first often carry the preposition back to the verb - 'discuss about', 'lack of sleep' as a verb, 'emphasise on'. The next section is about those verbs.

And some nouns take two standard partners. 'A solution to a problem' is the usual chunk, but 'a solution for' is common too, especially for a product or a group: 'a cleaning solution for glass', 'a solution for small farmers'. 'Discussion about', 'discussion of' and 'discussion on' are all standard.

Never borrow the verb's behaviour for the noun, or the noun's for the verb. Check each one.

Picture a family tree for each word. At the top sits the verb or adjective - depend, interested, discuss. Below it hang its nouns - dependence, interest, discussion. In many families, the whole tree shares one partner: depend on, dependence on. In a few, the parent and child disagree: 'discuss' stands alone, but 'discussion' holds hands with 'about'. When you learn a noun, glance up the tree and check whether it agrees with its parent.

Two nouns can name nearly the same idea and still take different partners. 'The reason for the delay' and 'the cause of the delay' both explain it - but 'reason' takes 'for' and 'cause' takes 'of'. 'An increase in prices' and 'a rise in prices' share 'in'; 'the price of rice' uses 'of'. So even close synonyms do not guarantee the same partner. The safe habit is to learn each common noun as its own chunk, and to notice when two nouns you use together - reason for, cause of - split.

Here is a noun whose partner changes the meaning, and the difference is worth hearing. 'The advantage of a bicycle is that it is cheap.' 'Kofi had an advantage over the other runners.' 'Ravi took advantage of the sunny weather.' 'Some people took advantage of the new boy.' In the first, 'advantage of' names a good point about something - the bicycle's benefit. In the second, 'advantage over' compares: Kofi was ahead of the others, perhaps because he trained more. In the third and fourth, the fixed phrase 'take advantage of' does two opposite jobs. With a thing - the weather, a chance, a sale - it means making good use of it. With a person, it usually means using them unfairly. So 'advantage' has at least two partners and one fixed phrase with two tones. No picture predicts that. The honest approach is to learn 'the advantage of', 'an advantage over' and 'take advantage of' as three separate chunks, and to notice who or what comes after 'of'.

Watch one small word turn a key into a keyhole. 'Mira has the key to the cupboard.' 'Mira has the key of the cupboard.' The first is the usual form in every variety, and it has a second life: 'the key to success', 'the key to the puzzle' - the thing that opens a problem. The second is also heard, especially in British and Indian English, for a real, metal key - but it cannot do the second job. Nobody says 'the key of success'. The same thing happens with 'the answer to' and 'an answer from'. 'The answer to the riddle' is the solution. 'An answer from the riddle-master' is a reply that came from a person. One small word, and a key in your pocket becomes the way into a puzzle - or refuses to.

Noun partners vary more than adjective and verb partners, because nouns can often take several meanings. 'A book on birds' and 'a book about birds' are both standard. 'Respect for' is usual, but 'with respect to' is a fixed phrase meaning 'concerning'. Some nouns take different partners in different varieties. 'An attitude to' is more common in British English and 'an attitude toward' or 'towards' in American English; all are standard. And 'married to' is really an adjective chunk - 'married' is describing someone - but it belongs here because it sits next to the noun 'marriage to' and the verb 'marry', which takes no preposition at all.

  1. Learn each common noun with its partner as one chunk: a reason for, a solution to, an interest in, the advantage of.
  2. When a noun comes from a verb or adjective you know, check whether the partner carries over - it often does (interest in, dependence on).
  3. Memorise the mismatches as pairs: discuss / a discussion about, lack / a lack of, marry / married to, emphasise / an emphasis on.
  4. Never carry the noun's partner back to the verb: not 'discuss about', not 'emphasise on'.
  5. Use 'married to', and read 'married with two children' as a different phrase.
  6. Where two partners are both standard - solution to / for, a book on / about - accept both.
  7. Collect noun chunks from your textbooks; formal writing uses them most.
You can now use the standard partner after common nouns, and you know where a noun and its verb disagree. Noun chunks to learn: a reason for, a need for, respect for; the solution to, the answer to, the key to, damage to, an invitation to; an interest in, a rise in; the advantage of, the cause of, a lack of; a discussion about; a problem with; and married to. Many noun partners match their verb or adjective: interested in - an interest in; depend on - dependence on. Some do not, and those are the ones to learn as pairs: discuss the plan / a discussion about the plan; lack sleep / a lack of sleep; marry someone / be married to someone. And some nouns take two standard partners: a solution to or for; a book on or about.

When no preposition is needed

These verbs take their object directly. The object sits right after the verb, with no small word in between.

VerbStandardThe extra word, and where it comes from
discussWe discussed the plan.'discuss about' - from 'talk about' and 'a discussion about'
enterRavi entered the room.'enter into the room' - from 'go into'
reachThe train reached Chennai.'reach to' or 'reach at' - from 'get to' and 'arrive at'
marryShe married a pilot.'marry with' - from first-language patterns (such as Hindi and Urdu 'se'); 'to' belongs to 'married to', not to 'marry'
approachKabir approached the dog.'approach to the dog' - from 'go up to' and 'the approach to'
lackArjun lacks confidence.'lacks of' - from 'a lack of'
returnTom returned home.'return back' - 'return' already means 'go back'

Two checks catch almost every case:

This is the Preposition Test run backwards: a preposition needs a partner, but it also needs a job, and if you take it away and the verb still reaches its object, the preposition was never doing anything.

Discuss the plan. Enter the room. Reach Chennai. Marry a pilot. Return home.

'Home' is a special case, because it can work like a place adverb: it already answers 'where to?'.

SentenceWhy
Tom went home after school.'Home' with a verb of movement takes no preposition: go home, come home, get home, reach home.
Tom stayed at home.For position, 'at home' is the fixed phrase (American English also says 'stayed home').
Tom went to his home in the village.Once 'home' has 'his' or 'the' in front, it is an ordinary noun and takes 'to'.

And 'return' does take 'to' - for the place. 'Lucas returned to Brazil' is standard. What is extra is 'back', because 'return' already contains it: 'return back' says 'go back back'. The same goes for 'revert back' and 'repeat again', which repeat part of the verb's meaning.

'Discuss about' and 'return back' are common non-standard patterns, heard widely in Indian English and elsewhere. Describe them, recognise them, and in writing use the direct form.

Go home, but go to his home. Return to Brazil, but not return back.

Picture a verb as a hand and its object as a ball. Some hands, like 'listen' or 'depend', wear a glove - the preposition - and can only catch the ball through it. Others, like 'discuss', 'enter' and 'reach', catch the ball bare-handed. Put a glove on a bare hand and the catch still happens, but it looks clumsy, and anyone watching knows the glove was not needed.

A verb that takes no preposition for one meaning can take one for another, and the preposition then changes the meaning. 'Reach the shelf' means get as far as it; 'reach for the shelf' means stretch towards it. 'Attend the meeting' means be present; 'attend to the problem' means deal with it. 'Answer the question' is replying; 'answer for your actions' is taking responsibility. So the rule is not 'these verbs never take prepositions'. It is 'for this meaning, the object comes directly' - and a preposition makes it a different verb.

Here is a verb where the preposition is extra in one sentence and standard in another, and careful writers get both wrong. 'The students entered the hall.' 'The students entered into the hall.' 'The two schools entered into an agreement.' 'The students entered into a long discussion.' The first is standard: a physical place, taken directly. The second is the slip. 'Into' repeats what 'enter' already means - going in - so for a room or a building, it is extra. The third and fourth are standard, and they are not slips. With abstract things - an agreement, a contract, a discussion, a partnership - 'enter into' is a fixed phrase meaning 'begin' or 'become part of'. Dictionaries record it, and formal writing uses it all the time. So the honest rule for 'enter' is: a place, directly; an agreement or a discussion, with 'into'. Never key 'entered into an agreement' as an error just because 'entered into the room' is one.

Watch one small word change what someone did with a shelf. 'Amara reached the top shelf.' 'Amara reached for the top shelf.' In the first, she got there. Maybe she stood on a chair, and now her hand is on the shelf. In the second, she stretched out her arm - and we do not know if she got there. 'Reached for' is the attempt; 'reached' is the arrival. The same thing happens with 'attend'. 'The doctor attended the meeting' means she was present, sitting in a chair. 'The doctor attended to the patient' means she looked after him. One small word, and a hand on the shelf becomes a hand stretching towards it - maybe not quite far enough.

Some verbs take their object directly in one variety and not in another. 'Stayed home' is standard in American English; British English prefers 'stayed at home'. 'Write someone' is standard in American English; British English says 'write to someone'. 'Lacking in' is standard as an adjective chunk: 'the soup is lacking in salt'. That is 'lacking', not the verb 'lack'. And 'discuss' is not the only verb with a noun that needs a preposition: 'emphasise the point' but 'put emphasis on the point'; 'request a refund' but 'a request for a refund'. The noun keeps its partner; the verb does not.

  1. Learn a short list of verbs that take their objects directly: discuss, enter, reach, marry, approach, lack, resemble, attend, answer.
  2. Take the preposition out and read the sentence. If the verb still reaches its object, the preposition was extra.
  3. Name the lender: the noun (a discussion about) or a similar verb (talk about, go into, get to).
  4. Write 'go home', 'come home', 'reach home' - but 'go to his home' when 'home' has 'his' or 'the'.
  5. Write 'return' or 'go back', never 'return back'.
  6. Keep 'enter into' for agreements and discussions, not for rooms.
  7. Remember that a preposition can make a new verb: reach / reach for, attend / attend to.
You can now leave out the preposition where the verb does not want one. These verbs take their object directly: discuss the plan, enter the room, reach Chennai, marry a pilot, approach the gate, lack confidence, resemble her mother, attend the meeting, answer the question. The extra preposition is usually borrowed - from the noun (a discussion about, a lack of) or from a verb with a similar meaning (talk about, go into, get to). 'Home' with a verb of movement takes no preposition: go home, come home. 'Return' takes 'to' for a place, but never 'back': return home, return to Brazil. 'Discuss about' and 'return back' are common patterns, not the standard form. And some verbs change meaning with a preposition: reach the shelf and reach for it; enter a room and enter into an agreement.

Up the hill, or look it up?

The same small words do two different jobs.

Preposition - glued to its partnerParticle - part of the verb, can move
Ravi ran up the hill. (*ran the hill up)Asha looked up the word. / looked the word up.
Tom climbed over the wall. (*climbed the wall over)Priya turned off the fan. / turned the fan off.
Mira walked down the road. (*walked the road down)Kabir picked up the pencil. / picked the pencil up.
Kofi looked after his brother. (*looked his brother after)Ellie filled in the form. / filled the form in.

Two tests settle nearly every case:

This is the Preposition Test's last question made practical: a preposition cannot leave its partner, so if the small word can slide away from the noun - or stand alone at the end, as in 'put your coat on' - it is not working as a preposition there.

If it can move, it is a particle. If it is glued to its partner, it is a preposition.

The pronoun test is the strongest of all, because it has almost no exceptions in ordinary English.

With a nounWith a pronounSo the word is
look up the wordlook it up - never 'look up it'a particle
turn off the radioturn it off - never 'turn off it'a particle
run up the hillrun up it - 'run it up' means something elsea preposition
look after the babylook after her - never 'look her after'a preposition

A particle can also stand at the end with no noun at all: 'Put your coat on.' 'The lights went out.' 'Come in!' The small word has no partner, and the sentence is complete.

Grammarians do not all agree on what to call these words. Some call them adverb particles; others, as you saw in chapter 6, treat them as prepositions that happen to have no partner. You do not need to settle that here. The test tells you which job the word is doing in this sentence, and that is what matters for choosing where it goes.

Look it up. Turn it off. Run up it. Look after her.

Picture the small word as a sticker. A preposition is a sticker glued to the front of its noun - 'up the hill', 'after the baby' - and if you try to peel it off and move it, the phrase tears. A particle is a sticker stuck to the verb with a magnet - 'look up', 'turn off' - and you can slide it along to the far side of the noun, or right to the end of the sentence, and it still holds.

A particle usually changes the meaning of the verb, sometimes a lot. 'Look' is seeing; 'look up' is searching in a book. 'Turn' is rotating; 'turn off' is stopping a machine. 'Give' is handing over; 'give up' is stopping trying. A preposition usually keeps the verb's own meaning and adds a place or relation: 'run up the hill' is still running, with a direction added. This is a useful second check - but it is not perfect, because 'pick up the pencil' keeps a fairly literal meaning and is still a particle. When in doubt, the movement test wins.

Here is a sentence where the same words can be read both ways, and the test shows you which reading you mean. 'Arjun looked up the chimney.' Reading one: Arjun stood in the fireplace and pointed his eyes upwards, into the chimney. 'Up' is a preposition with the partner 'the chimney'. Try moving it: 'Arjun looked the chimney up' - that no longer means he pointed his eyes. So in this reading, 'up' is glued. Reading two: Arjun searched for the word 'chimney' in a dictionary. Here 'look up' is the verb for searching, and 'up' is a particle. Now the move works: 'Arjun looked the word chimney up.' Now try the pronoun test. 'Arjun looked up it' can only be reading one - pointing his eyes. 'Arjun looked it up' can only be reading two - searching. So one string of words, two grammars, two meanings - and the test does not just label the word, it tells you which sentence you are reading.

Watch one small word change sides and change the whole event. 'Kofi ran up the bill.' 'Kofi ran up the hill.' They look like twins. But try the move. 'Kofi ran the bill up' works - it means he spent more and more until the bill was large. 'Up' is a particle, and 'run up' is a spending verb. 'Kofi ran the hill up' fails. 'Up' is a preposition glued to 'the hill', and Kofi is using his legs. The same thing happens with 'look over'. 'Mei looked over the homework' - particle, meaning she checked it; 'she looked the homework over' works. 'Mei looked over the fence' - preposition, meaning her eyes went across the top of it; 'she looked the fence over' would mean she inspected the fence. One small word, and a restaurant bill becomes a hillside.

Some verbs have both a particle and a preposition: 'put up with the noise', 'run out of milk', 'look forward to the holiday'. These three-word verbs are handled in Master (section 37). The movement test works best with a short noun. With a long noun phrase, the particle usually stays next to the verb for comfort: 'look up every word you do not know' sounds better than moving 'up' to the end - but it can still move in principle. And a few particles never have a noun at all in a given verb: 'the plane took off', 'the milk went off'. They pass the 'stand alone' part of the test, which is enough to show they are not working as prepositions there.

  1. Find the small word after the verb and the noun after it.
  2. Try moving the small word after the noun. If it still works and means the same, it is a particle.
  3. Try swapping the noun for 'it'. A particle goes after it (look it up); a preposition stays in front (run up it).
  4. If the small word stands alone at the end with no noun, it is a particle there (put your coat on).
  5. Never write 'look up it' or 'turn off it' - put the pronoun in the middle.
  6. Do not label every small word after a verb as a preposition; run the test first.
  7. When a sentence can be read two ways, use the tests to decide which meaning you intend.
You can now tell a preposition from a particle with one quick test. A preposition is glued to its partner and cannot move: run up the hill, climb over the wall, look after the baby. 'Run the hill up' is not English. A particle belongs to the verb and can move after the noun: look up the word, look the word up; turn off the fan, turn the fan off. With a pronoun, the particle must go after it - look it up, turn it off - while a preposition stays in front - run up it, look after her. A particle can also stand alone at the end: put your coat on, come in. The same word can do both jobs in different sentences, and grammarians argue about what to call particles - but the movement test tells you which job the word is doing here.

Explain your evidence

Every choice in this band has a reason you can say in one sentence. Naming the partner and the rule is most of a reason.

SectionThe reason sounds like
S11 time'"Monday morning" names a day, so "on".' / '"Next" already points, so no preposition.'
S12 places'A bus is a platform you walk on, so "on".' / '"At school" means being a pupil.'
S13 since, for, by, until'2019 is a point, so "since"; three years is a length, so "for".'
S14 between, among'The three countries are linked one by one, so "between".'
S15-17 partners'"Good at", "depend on" and "reason for" are fixed chunks - the dictionary lists them.'
S18 no preposition'"Discuss" takes its object directly, so no "about".'
S19 particles'"Up" moves - "look the word up" - so it is a particle.'

Every row has the same shape - the Preposition Test's steps, said aloud:

The partner, the relation, the check. If you can say all three, you are not guessing.

Some answers have two standard forms, and a good reason says so instead of pretending one is wrong.

ChoiceA reason that allows for both
at the weekend / on the weekend'Both are standard - British and American. I will keep one in this essay.'
in hospital / in the hospital'Both mean staying as a patient - British and American.'
divided between them / among them'Between suggests separate shares; among treats them as a group. Both standard.'
bored with / bored of'Both are used; "with" is more traditional, so I use it in formal writing.'
a solution to / for'"To" is usual with a problem; "for" is common for a product or a group.'

And for chunks - good at, depend on, a reason for - the honest reason is not a picture. It is 'this is the fixed partner'. That still counts as a reason, because it can be checked: any learner's dictionary prints the partner beside the word. What does not count is a picture invented afterwards, like '"interested in" because interest is a box you are inside'. It fits one word and fails on the next.

A real reason can be checked: by a test, by a picture that works every time, or by a dictionary.

Picture a reason as a three-legged stool. One leg is the partner - point at the noun phrase. One leg is the relation or rule - name the picture or the chunk. One leg is the check - say what would change the answer. With all three legs, the stool stands on any floor, in any sentence. Take one away and it wobbles; take two away and you are back to 'it sounds right'.

The check is the part of a reason that does the most work, because it shows you understand the edge of the rule. 'On Monday morning - a day is named' is a good reason; adding 'if it were just "the morning", I would write in' shows you know exactly what would change it. 'Discuss the plan - no preposition' is good; adding 'but "a discussion about the plan" needs one, because the noun cannot take an object directly' shows you know the neighbouring case. A reason with a check is a reason you can use on the next sentence.

Here is the thing to be careful about, and it applies to whoever is teaching you as much as to you. A reason can be right about the answer and wrong about why. '"Between Asha and Ravi", because between is for two.' The answer is correct. The reason is half false - 'between' is standard for three countries in a treaty too. Anyone who carries that reason will start writing 'a treaty among three countries'. '"On the bus", because buses are big.' Correct answer, weak reason - a lorry is big, and you are 'in' its cab. The real reason is that a bus is a platform you can stand and walk about on. '"We discussed the plan", because "discuss about" is informal.' Correct answer, false reason - 'discuss about' is not a casual form of the standard; it is a pattern borrowed from 'talk about'. The real reason is that 'discuss' takes its object directly. So 'is the answer right?' is not the whole question. The better one is: would this reason still work on a sentence I have not seen? If it only fits the sentence it was invented for, it was a story told afterwards, not a reason.

Watch one reason rescue a whole family of sentences. A student writes: 'I have lived here since 2019. I have lived here since three years.' The first is standard. The second is not. If the student's reason is 'since means how long', they cannot see why one is fine and the other is not - both are about how long. Now give the reason with a partner in it: 'since takes a point; for takes a length'. Suddenly both sentences are clear. 2019 is a point - since. Three years is a length - for. And the same reason fixes sentences the student has never written: since breakfast, for an hour, since my birthday, for a long time. One reason with a partner in it, and a whole family of sentences becomes checkable - which is exactly what a reason is for.

A reason does not have to be long. 'Chunk: good at' is a complete reason for a fixed pair, and 'next already points' is complete for a time phrase. Length is not the test; checkability is. Some choices really are free. 'Think of' and 'think about' overlap in many sentences, and 'a book on birds' and 'a book about birds' are both standard. There, the honest reason is 'both work here'. And a reason about variety is not a reason about correctness. 'I use "at the weekend" because I write British English' is a good reason for your choice - not a reason to mark 'on the weekend' wrong.

  1. Find the partner first - the noun phrase after the preposition, or the object after the verb.
  2. Name the relation or rule: a stretch, a day or a point; a pin or a ruler; one by one or a group; a fixed chunk; no preposition needed; glued or moving.
  3. Add the check: what swap, removal or move would change the answer.
  4. For chunks, say 'fixed partner' - and know that a dictionary can confirm it.
  5. Where two forms are standard, say so and name the difference: variety, register or picture.
  6. Test every reason on a sentence it was not made for. If it fails, it was not a reason.
  7. Never give 'it sounds right' as your only reason in an exam.
You can now choose a preposition - or none - across every Practice topic, and say why. A preposition reason has three parts: the partner (the noun phrase), the relation or rule (what it names, or the chunk it belongs to), and the check (what would change it). The reasons from this band: a stretch, a day or a point for time and places; a pointing word that needs no preposition; a pin for since, a ruler for for; by as a deadline and until as a stretch; between for one-by-one links, among for a group; fixed chunks for adjective, verb and noun partners; direct objects after discuss, enter and reach; particles that move. Where two forms are standard, a good reason says both. And a reason is real only if it works on a sentence it was not made for.

Writing with intent · ages 12–16

Ending with a preposition

A stranded preposition is still doing its job. Apply the Preposition Test: find the small word, then find its partner - even when the partner has moved to the front of the sentence. If you can put the partner back after the preposition, the preposition is working normally.

Stranded (everyday and standard)Pied-piped (formal option)The partner
What are you looking at?At what are you looking?What
Who did you go with?With whom did you go?Who / whom
the man I spoke tothe man to whom I spokethe man
the city she comes fromthe city from which she comesthe city

Both columns are correct English. The left column is what most writers use in speech, stories, emails and most essays. The right column belongs to formal letters, legal and ceremonial writing, and some academic prose.

Some sentences cannot be pied-piped at all. The preposition belongs to a fixed verb, and moving it breaks the verb apart. Here stranding is the only natural choice.

Stranding - the only natural versionForced pied-piping
This is the kind of noise I will not put up with.This is the kind of noise up with which I will not put.
The baby needs looking after.(no possible version)
That idea has been thought about for years.(no possible version - passives strand)
She is easy to talk to.(no possible version)
Where did the rule come from? It is usually traced to seventeenth-century critics - John Dryden is the name most often given - who admired Latin, where a preposition cannot be left at the end, and began treating the English pattern as a fault. Later schoolbooks repeated the idea. Modern usage guides on both sides of the Atlantic describe the ban as a superstition.

The famous 'up with which I will not put' line is often credited to Winston Churchill as a joke against the rule. The attribution is doubtful, but the joke works because the forced version is so absurd.

Picture a preposition holding a rope, with its partner tied to the other end. In a stranded sentence the partner has walked to the front of the room, but the rope is still tied - you can follow it back from 'at' to 'What'. Pied-piping is the preposition walking to the front too, holding the rope short. Either way the rope is never cut, and that is all grammar asks.

Relative clauses give you a third option: drop the relative word entirely. 'The man to whom I spoke' (formal), 'the man who I spoke to' or 'the man that I spoke to' (neutral), and 'the man I spoke to' (the most common in speech and much writing). Only the pied-piped version needs 'whom'; once the preposition is stranded, 'who', 'that' or nothing are all standard.

Here is where it gets genuinely hard. Some sentences end with a small word that looks like a stranded preposition and is not. 'Turn the lights off.' 'She finally gave in.' 'I looked it up.' Apply the Preposition Test: take the partner away. There is no partner anywhere - not at the front, not implied. These are particles belonging to phrasal verbs, or prepositions used without a complement, and there is nothing to pied-pipe. 'Off which turn the lights' is not an option in any register. Other endings are genuine strandings where the partner is hidden inside a relative clause with no relative word: 'the chair you are sitting on' - the partner of 'on' is 'the chair', two words and a clause away. And a few sentences contain both. 'What did you look it up in?' - 'up' is a particle, 'in' is a stranded preposition whose partner is 'What'. So before you ask 'Should I move this preposition?', ask 'Does it have a partner at all?' Only a word with a partner can be pied-piped.

Two sentences, one preposition, and a whole change of scene. 'Who did you give the letter to?' 'To whom did you give the letter?' The facts are identical. The first is a friend asking you in the corridor. The second is a lawyer asking you in a courtroom, or a detective in an old novel. Now try it the other way. A thank-you note from a school to a visiting speaker might say 'the speaker to whom we owe so much', and it sounds warm and respectful. Put the same structure in a text - 'the pizza place to which I went' - and it sounds like a joke. The grammar did not change. The reader did. That is the whole lesson of this section: position is a register dial, not a right-or-wrong switch.

Pied-piping is not wrong or old-fashioned either. Some writers use it all the time in formal essays, and some teachers and exam boards prefer it in formal letters. If an instruction asks for a formal register, 'to whom' is a sound choice. And a few teachers still mark stranding down. If that happens, you can use the pied-piped version for that reader - and you can also know, calmly, that the major grammars of English treat stranding as fully standard.

  1. Find the partner of every final preposition, even when it has moved to the front.
  2. Leave stranded prepositions alone in speech, stories, emails and most essays.
  3. Use pied-piping ('to whom', 'in which') when the reader expects a formal register.
  4. Never put the preposition in both places: 'the house in which I live', not 'in which I live in'.
  5. Keep a preposition with its fixed verb: 'put up with', 'look after'.
  6. Check that a final small word has a partner at all before trying to move it.
  7. Drop a doubled 'at' or 'to' after 'where' in careful writing.
  8. If a reader questions a stranded preposition, explain the choice as register, not as a rule.
You can now leave a preposition at the end of a sentence with confidence. A stranded preposition, as in 'What are you looking at?', still has a partner; the partner has only moved to the front. The Preposition Test finds it. Pied-piping, as in 'At what are you looking?' or 'the man to whom I spoke', carries the preposition forward. It is a formal register option, not the only correct form. Some sentences cannot be pied-piped at all - 'put up with', passives, 'easy to talk to' - and some final words are particles with no partner. The real errors are the doubled preposition ('in which I live in') and forcing a fixed verb apart. The old ban itself was never a rule of English; it is usually traced to seventeenth-century critics who admired Latin.

Which word does the phrase belong to?

Every prepositional phrase belongs to one word. Apply the Preposition Test to find the preposition and its partner, then ask a second question: which word is this whole phrase telling us about? If two words could both be the owner, the sentence has two meanings.

Ambiguous sentencePhrase belongs to the verbPhrase belongs to the noun
I saw the man with the telescope.I used the telescope to see him.The man had the telescope.
Priya hit the boy with the umbrella.She used the umbrella to hit him.The boy was holding the umbrella.
They discussed the plan in the meeting room.The discussion was in the meeting room.The plan was the one in the meeting room (pinned up there).

Once you know which reading you mean, there are three repairs.

Ambiguity grows when phrases stack. Each new phrase can attach to any noun before it, or to the verb.

Stacked sentencePossible readings
the book on the shelf by the windowthe shelf is by the window; or the book is by the window (on a shelf there)
Put the box on the table in the kitchen.the table is in the kitchen (move the box to it); or the box is on the table, and you put it in the kitchen
a report on crime in schools from the ministrythe ministry wrote the report; or the schools are the ministry's; or the crime came from the ministry
The working rule: put a prepositional phrase as close as you can to the word it belongs to. If it must follow a noun it does not belong to, rescue it with a relative clause ('the man who had...') or move it to the front of the sentence.

Readers have a habit that helps and hurts. They tend to attach a phrase to the nearest word that makes sense. That is why 'the man with the telescope' pulls toward the noun reading - and why a writer who meant the verb reading needs to act.

Picture each prepositional phrase as a coat on a hook. A sentence gives it a row of hooks - the verb, each noun in turn. If the coat hangs between two hooks, the reader cannot tell whose coat it is. Fixing the sentence is moving the coat onto one hook, clearly, so anyone walking past would see whose it is.

Moving a phrase to the front of a sentence usually attaches it to the verb or the whole clause: 'In the meeting room, they discussed the plan' can only mean the discussion was there. And a relative clause attaches firmly to a noun: 'the plan that was in the meeting room'. Those two moves - front for the verb, relative clause for the noun - repair most attachment problems.

Here is where it gets genuinely hard. Some phrases can attach to three or four places, and the readings multiply. 'The police arrested the man in the car with the stolen phone' could mean the man was in the car, or the arrest happened in the car; the phone could belong to the man, the car, or the arrest. A reader who guesses wrong may still think they understood. Worse, the most natural repair for one phrase can create a new ambiguity for another. Moving 'with the stolen phone' to the front - 'With the stolen phone, the police arrested the man in the car' - now suggests the police used the phone. So stacked phrases usually need more than a move. They need the sentence broken up: 'The man had a stolen phone. The police arrested him in his car.' Two short sentences, each with one clear owner for each phrase. The hard skill is knowing when a single sentence is carrying too many phrases to be rescued, and splitting it without losing a fact.

One phrase, two hooks, and a very different news story. 'The minister criticised the reporter in the newspaper.' Reading one: the minister wrote an article in the newspaper criticising a reporter. The criticism was published. Reading two: a reporter who works in the newspaper was criticised by the minister - perhaps in a speech, perhaps on television. In the first, the minister went public in print. In the second, the newspaper is simply where the reporter works. A reader who picks the wrong one might believe the minister wrote something they never wrote. The fix depends on the truth: 'In a newspaper article, the minister criticised the reporter' or 'The minister criticised the newspaper's reporter.' Same facts, one hook each.

Most sentences with a phrase after a noun are not ambiguous in practice, because one reading is absurd or the context settles it. 'He opened the door with a key' is clear. Do not rewrite a sentence just because a second reading is technically possible. And in conversation, listeners ask. The risk is highest in writing that is read once, by strangers, and acted on - instructions, notices, contracts and news.

  1. For every prepositional phrase, ask which word it belongs to.
  2. If two words could own it, write out both readings in plain words.
  3. Decide the intended reading before you repair anything.
  4. Move the phrase to the front to attach it to the verb.
  5. Use a relative clause ('who had', 'that was') to attach it to a noun.
  6. Split a sentence that is carrying three or more stacked phrases.
  7. Do not rely on a comma to decide attachment.
  8. Leave sentences alone when the second reading is absurd.
You can now see when a prepositional phrase has two possible owners. Every prepositional phrase attaches to one word - a verb or a noun. When it could attach to either, as in 'I saw the man with the telescope', the sentence has two meanings and nothing ungrammatical to warn anyone. The method is to find the phrase with the Preposition Test, ask which word it belongs to, and state both readings. Then decide what you meant and repair: front the phrase for the verb reading, add a relative clause for the noun reading, or reword. Stacked phrases often need the sentence split. And judge the stakes: a harmless second reading can stay, but instructions and news cannot afford one.

Chains of 'of'

A chain of 'of' is several prepositional phrases, each hanging from the noun before it. Apply the Preposition Test to each 'of' in turn: find its partner, and ask what relation it names - whose? what kind? part of what? Some links are essential; others can be expressed more directly.

ChainToolUntangled
the students of the schoolpossessivethe school's students
the survey of the studentscompound nounthe student survey
the increase of the prices of foodverbfood prices rose
the improvement of the results of the teamverb + possessivethe team's results improved

The three tools, in order of power:

The most powerful repair finds the verb hiding inside an abstract noun. Words like 'analysis', 'increase', 'decision', 'improvement' and 'discussion' are verbs turned into nouns, and each one tends to drag an 'of' behind it. Turn the noun back into a verb and the 'of' usually disappears.

Noun + ofVerb
the analysis of the data showedwhen we analysed the data, we found
the decision of the committee wasthe committee decided
the discussion of the proposal by the boardthe board discussed the proposal
a reduction of the use of plasticusing less plastic
The working rule: one 'of' is normal; two in a row deserve a look; three or more almost always hide a verb. Find who did what, and write it as a subject and a verb.

Some 'of' links cannot be replaced and should not be: 'a cup of tea', 'the Prime Minister of India', 'the Tower of London', 'most of the students'. Measures, fixed titles, names and quantities keep their 'of'.

Picture a chain of 'of' as a row of carriages behind an engine that is not moving. Each carriage is hooked to the one before, and the reader has to walk back through every carriage to find where the train is going. Untangling puts the engine - the verb - near the front, so the reader knows where they are headed before they meet the cargo.

Compound nouns can chain too. 'The school student attitude survey results report' untangles the 'of' chain but creates a new pile-up, this time of nouns with no prepositions at all. Aim for the middle: 'the report on the school's survey of student attitudes' keeps one or two prepositions and uses a possessive, so each noun has a clear job.

Here is where it gets genuinely hard. The 'of' after an abstract noun can hide two opposite relations. 'The love of a mother' usually means the mother loves someone. 'The love of money' means someone loves money. 'The shooting of the hunters' could mean the hunters shot, or were shot. Grammarians call these subjective and objective 'of'. Inside a short phrase, context usually settles it. Inside a chain - 'the criticism of the minister of the reporters' - the reader may not know who criticised whom. This is where turning the noun back into a verb is not just tidier, but more honest. A verb forces you to name the subject: 'The reporters criticised the minister' or 'The minister criticised the reporters.' You cannot write the verb without deciding. So when you untangle, you are not just saving words. You are finding out whether you knew who did what in the first place - and sometimes discovering that your draft never said.

One chain, two stories. 'The report of the investigation of the complaint of the parents.' It sounds official and complete. Now try to write it as a verb sentence, and you have to answer questions the chain let you avoid. Who investigated? Who complained? Who reported? 'The parents complained. The school investigated, and published a report.' Or perhaps: 'The parents complained about the investigation, and the newspaper reported it.' Those are different events. The chain covered both, and a reader could believe either. Untangling did not just shorten the sentence. It showed that the original never said what happened.

Not every chain is bad. Legal and scientific writing sometimes needs a precise chain because each link names an exact relation, and a formal title - 'the Department of Education of the State of Kerala' - is what it is. And possessives with inanimate nouns ('the table's leg', 'the report's conclusion') are standard, though some writers prefer 'of' for objects. Use the version that reads most clearly in context.

  1. Count the 'of' phrases in a row; two deserve a look, three almost always need untangling.
  2. Look for an abstract noun ('analysis', 'increase', 'decision') and turn it back into a verb.
  3. Use a possessive ('the school's students') when the relation is ownership or belonging.
  4. Use a compound noun ('the student survey') for a short, familiar label.
  5. Check that every noun in the chain survives, or is cut on purpose.
  6. Check the direction of each 'of' - who did what to whom - before rewriting.
  7. Keep 'of' in measures, quantities, titles and names.
  8. Avoid replacing a chain of 'of' with a pile of stacked nouns.
You can now see a chain of 'of' and untangle it. A chain is several 'of' phrases hanging one from another, as in 'the results of the survey of the attitudes of the students'. Each is grammatical; together they make the reader rebuild the relationships. The Preposition Test names each link's relation. Then three tools untangle it: a possessive ('the school's students'), a compound noun ('the student survey'), and the strongest - a verb recovered from an abstract noun ('prices rose'). Keep the 'of' that is essential - measures, quantities, names. Check who did what before rewriting, because 'of' can hide opposite relations. And notice what untangling reveals: a chain can hide the fact that the writer never decided what happened.

After lunch, or after we ate?

What follows the word decides its job. Apply the Preposition Test: find the partner. If the partner is a noun phrase or an -ing form ('after lunch', 'after eating'), the word is working as a preposition. If a whole clause follows, with its own subject and verb ('after we ate'), it is joining clauses - a conjunction.

Word+ noun phrase (preposition)+ clause (conjunction)
afterafter lunchafter we ate
beforebefore the exambefore the exam started
sincesince Mondaysince we moved here
despite / in spite ofdespite the rain; despite being tired❌ (no clause)
although / though❌ (no bare noun)although it rained
because of / becausebecause of the rainbecause it rained

'Like' and 'as' split along the same line, with a register difference on top.

UseExampleRegister
like + noun phraseShe sings like her mother.standard everywhere
like + clauseLike I said, it's closed.informal - very common in speech, not an error
as + clauseAs I said, it is closed.standard and formal
as + noun phraseShe works as a nurse.a role, not a comparison
'Like' before a clause has been used by good writers for centuries and is standard in conversation, but many teachers, editors and exam markers still expect 'as' or 'as if' in formal writing. Choose by reader, not by fear.

Notice the difference between 'She works like a nurse' (she resembles a nurse in how she works) and 'She works as a nurse' (that is her job). Here the choice changes the fact, not only the register.

Picture each linking word with a hand held out. Some hands are shaped to hold a single object - a noun phrase: 'despite', 'because of', 'during'. Some are shaped to hold a whole scene - a clause: 'although', 'because', 'while'. A few, like 'after', 'before' and 'since', can reshape their hand for either. The error is handing a scene to a hand that can only hold an object.

'Despite the fact that' and 'in spite of the fact that' turn a clause into a noun phrase so 'despite' can take it: 'despite the fact that it rained'. It is correct, but long; 'although it rained' says the same in three words. Use the long form only when you want 'despite' for rhythm or emphasis.

Here is where it gets genuinely hard. Some grammars do not accept the traditional split at all. The Cambridge Grammar of the English Language (Huddleston and Pullum) argues that 'after', 'before' and 'since' are prepositions in every use - they simply take different complements: a noun phrase ('after lunch'), a clause ('after we ate'), or nothing ('I had seen it before'). On that view, 'because' is a preposition that takes a clause, and 'because of' is 'because' plus 'of'. Chapter 6 met this view with words like 'outside'. This chapter keeps the traditional labels for exam work, because most school syllabuses use them, and returns to the modern analysis in Master S31. What matters for your writing is the same on both views: each word has a set of partners it can take. 'After' takes a noun or a clause. 'Despite' takes only a noun or -ing form. 'Although' takes only a clause. The label is the theory; the partner is the practice.

One small change of partner, and a sentence becomes an error or a register shift. 'Despite the traffic, Mira arrived on time.' Correct. 'Despite the traffic was heavy, Mira arrived on time.' Incorrect - 'despite' cannot take a clause. 'Although the traffic was heavy, Mira arrived on time.' Correct again. Now 'like': 'Mira drives like her father.' Standard everywhere. 'Mira drives like her father does.' Informal, and very common. 'Mira drives as her father does.' Formal. The first set shows a real error. The second set shows only a change of register. Knowing which kind of change you are looking at is the craft.

Transformation exercises sometimes want a single target form - 'rewrite using despite' - and then the -ing or noun phrase version is the answer. That is a task instruction, not a claim that 'although' is worse. And 'like' with a clause is standard in informal American and British English. Do not tell a friend their text is wrong; tell a formal essay writer that 'as' may suit their reader better.

  1. Look at what follows the linking word: a noun phrase, an -ing form, or a clause.
  2. Use after, before and since with either - but know which job each is doing.
  3. Pair despite and in spite of with a noun phrase or an -ing form, never a bare clause.
  4. Pair although and though with a clause.
  5. Use because of + noun phrase and because + clause.
  6. Use one linking word per join: not 'although ... but'.
  7. Treat 'like' + clause as informal, and choose 'as' or 'as if' for formal readers.
  8. Remember that 'as a nurse' (role) and 'like a nurse' (resemblance) differ in meaning.
You can now tell what a linking word is doing by what follows it. After, before and since are prepositions with a noun partner ('after lunch') and conjunctions with a clause ('after we ate'). The word is the same; the job changes. Despite and in spite of take a noun phrase or an -ing form; although takes a clause. Because of takes a noun phrase; because takes a clause. 'Despite it rained' and 'because the rain' are the errors to catch. 'Like' before a noun is standard; before a clause it is informal but not wrong, and 'as' is the formal choice. And whatever label a grammar uses, the practical question is the same: which partners can this word take?

In trouble, on time, under pressure

An abstract phrase still has a preposition and a partner. Apply the Preposition Test to 'in trouble': the preposition is 'in', the partner is 'trouble'. Then ask what relation the preposition would name if the partner were a real place - and see how much of the meaning that picture explains.

Spatial pictureConcreteAbstract
in = inside a containerin the boxin trouble, in love, in debt, in danger
on = on a surface, supportedon the tableon time, on duty, on strike, on fire
at = at a pointat the doorat risk, at peace, at war, at ease
under = below, weighed downunder the bedunder pressure, under control, under stress
beyond = past a boundarybeyond the hillsbeyond doubt, beyond repair, beyond belief
out of = leaving a containerout of the roomout of order, out of breath, out of date

Some pairs share a partner and differ by preposition. The spatial picture often explains the difference.

PairMeaningExample
on timeat the scheduled moment - a point on a timetableThe train arrived on time.
in timeearly enough, inside the window before it is too lateWe arrived in time to see the start.
in orderarranged correctly; acceptableYour documents are in order.
out of orderbroken; or unacceptable (BrE informal: 'That comment was out of order')The lift is out of order.
in charge ofresponsible forPriya is in charge of the team.
on the way / in the waytravelling / blockingI'm on the way. You're in the way.
The working rule: when you are unsure of an abstract phrase, picture the partner as a place - a container, a surface, a point, a weight above you, a line to cross. The right preposition usually fits that picture. When it does not, learn the phrase as a chunk.

Picture a map of a country that does not exist - the country of situations. Trouble is a valley you fall into. Pressure is a heavy sky pressing down. Risk is a crossroads where you stand. Doubt is a river, and the proven fact is on the far side of it. English uses its ordinary place words to walk you around that map.

Many abstract phrases have a movement version with a different preposition: be in trouble / get into trouble / get out of trouble; be under control / bring it under control; be at risk / put someone at risk. The spatial picture predicts the movement word: 'into' for entering a container, 'out of' for leaving it.

Here is where it gets genuinely hard. The spatial picture explains a lot, but it does not explain everything, and pretending it does leads to confident mistakes. 'On fire' fits a surface picture. But 'in flames' uses a container. Both describe burning. 'On holiday' in British English, 'on vacation' in American, but 'in the holidays' for the period. 'At night' but 'in the night'; 'at Christmas' but 'on Christmas Day'. Why? Partly history: phrases fixed in English at different times, under different influences, and then stayed. Partly the picture changes with how the speaker frames the situation - 'in the night' treats the night as a container of events, 'at night' treats it as a point on a daily cycle. So the honest position is this: the spatial picture is a strong helper, not a law. Use it to remember and to guess well. When a phrase breaks the picture, do not invent a rule to rescue it. Learn it as the chunk it is - this chapter said so from the start.

Two phrases, one preposition apart, and two different stories about Mira's morning. 'Mira got to the station on time.' 'Mira got to the station in time.' The first tells you about the timetable: she arrived at the moment she was supposed to. Maybe the train was late anyway. Maybe she was bored on the platform. The second tells you about a deadline: she arrived early enough - just - to catch the train, or to say goodbye, or to stop someone boarding. It almost always implies a near miss. On time is a point on a schedule. In time is inside a window that was closing. Same girl, same station, different drama.

Some abstract phrases differ between varieties: 'on holiday' (BrE) and 'on vacation' (AmE) both use 'on', but 'in hospital' (BrE) and 'in the hospital' (AmE) differ by article. And 'out of order' as 'unacceptable behaviour' is mainly British and informal. The spatial picture is a teaching tool, not a claim about how every phrase was historically formed. Use it where it helps.

  1. Find the preposition and its partner, even in an abstract phrase.
  2. Picture the partner as a place - container, surface, point, weight or boundary.
  3. Choose the preposition that fits the picture: in trouble, under pressure, at risk, beyond doubt.
  4. Keep 'on time' (to schedule) and 'in time' (early enough) apart.
  5. Use the movement form when something changes: into trouble, out of danger.
  6. Learn phrases that break the picture as chunks, without inventing a rule.
  7. Use one abstract phrase per idea, and keep each with its fixed preposition.
  8. Check variety differences like 'on holiday' and 'on vacation' when writing for a particular reader.
You can now see the place picture inside an abstract preposition phrase. English borrows its space words for time, feelings and situations: in trouble (a container), on time (a point on a schedule), at risk (a point where harm could strike), under pressure (a weight above you), beyond doubt (past a boundary), out of order (outside the arranged state). The Preposition Test still applies - find the preposition and its partner - and the picture often tells you which preposition fits. Pairs like 'on time' and 'in time' differ in meaning, and the picture explains how. But the picture is a helper, not a law. 'On fire' and 'in flames', 'at night' and 'in the night' show where phrases must be learned as chunks.

In spite of, due to, in terms of

A complex preposition is several words acting as one. Apply the Preposition Test to the whole unit: 'in spite of' is the preposition, 'the rain' is the partner, and the relation is contrast. Then ask whether a shorter preposition names the same relation.

Complex prepositionShorter equivalentKeep the long one when...
with regard to / with respect toabout, ona formal letter needs to signal a topic change
in order toto'to' alone could be misread, or you contrast 'in order not to'
in spite ofdespiterhythm or emphasis - both are standard
in the event ofif there islegal or safety notices use it by convention
in terms ofin, for, by (often a rewrite)you really are comparing on one measure
on behalf of(none)always - it means 'representing'
instead of(none)always - it means 'in place of'

'Due to' has a history worth knowing. For much of the twentieth century, some usage writers and teachers objected to 'due to' meaning 'because of' at the start of a sentence or after an ordinary verb. Their argument was that 'due' is an adjective, so 'due to' should only follow a form of 'be' or a noun.

SentenceOld objectionToday
The delay was due to fog.accepted - follows 'was'standard
a delay due to fogaccepted - follows a nounstandard
Due to fog, the flight was delayed.objected towidely accepted; very common in edited writing
The flight was cancelled due to fog.objected towidely accepted
That objection is now history. Modern dictionaries and usage guides record 'due to' as a compound preposition meaning 'because of', and it appears constantly in careful writing. A few conservative readers still prefer 'because of' or 'owing to' at the start of a sentence; if you know your reader is one of them, the swap costs nothing.

Picture a preposition as a bridge between two banks - the sentence and the partner. A one-word bridge is a plank: quick to cross. A complex preposition is a bridge with railings, lamps and a toll booth. Sometimes the extra structure is needed - a heavy load, a ceremonial crossing. Often it just makes the reader walk further to reach the same bank.

Some complex prepositions shift meaning when shortened, so check before trimming. 'In front of' is not 'before' in most place contexts ('in front of the school' vs 'before the school' sounds like time or a tribunal). 'Instead of' and 'on behalf of' have no one-word equivalent at all. Trim only when the short form names exactly the same relation.

Here is where it gets genuinely hard. Some complex prepositions do real work in one register and none in another. 'In the event of fire, use the stairs' is no shorter than 'If there is a fire, use the stairs' - both are eight words - but safety notices use it because readers recognise the formula instantly. In a story, 'in the event of rain we stayed in' would be absurd. 'With respect to' is padding in an email about a party, but in mathematics - 'differentiate with respect to x' - it is an exact technical term with no substitute. 'In terms of' is usually filler, but 'Measured in terms of population, India is larger; in terms of area, Russia is' uses it precisely: it names the scale of comparison. So you cannot make a list of 'bad' complex prepositions and delete them on sight. The skill is asking, for each one, in this sentence and for this reader: does the long form name a relation the short form does not, or signal a convention the reader relies on? If not, trim.

Two emails to a head teacher, saying the same thing. 'With regard to the matter of the trip, in order to ensure that we are in a position to proceed, it would be helpful in terms of planning to receive the forms in advance of Friday.' 'To plan the trip, we need the forms before Friday.' The first has five complex prepositions and thirty-six words. The second has one short preposition and ten words. Nothing was lost - not one fact, not one request. Now the surprise: the first one feels more respectful to many writers, and less clear to almost every reader. Politeness can be kept with 'Please' and 'Thank you'. It does not need a toll booth on every bridge.

Formal and legal writing has conventions, and a reader who expects 'in accordance with' or 'pursuant to' may find plainer words jarring. Match the register the reader expects. And 'in spite of' and 'despite' are equally standard; neither is padding. Choose by rhythm. The same goes for 'owing to', 'because of' and 'due to' - all are acceptable meaning 'because of' in modern English.

  1. Treat a complex preposition as one unit and find its partner.
  2. Try a one-word replacement: about, to, despite, before, if.
  3. Keep 'on behalf of', 'instead of' and 'in front of' - they have no exact short form.
  4. Trim 'with regard to', 'in order to' and 'at this point in time' when meaning allows.
  5. Use 'in terms of' only to name the measure of a comparison.
  6. Do not stack complex prepositions in one sentence.
  7. Accept 'due to' meaning 'because of'; swap it only for a reader you know prefers 'because of'.
  8. Match the conventions of legal, technical and safety writing when you write in those registers.
You can now recognise and trim complex prepositions. A complex preposition is several words working as one - in spite of, due to, with regard to, on behalf of - and the Preposition Test treats the whole unit as the preposition. Some carry meaning no short word can: on behalf of, instead of. Others mostly add length: with regard to (about), in order to (to), at this point in time (now). The test is whether the short form names the same relation for this reader. Conventions in safety, legal and technical writing can justify the long form. And 'due to' meaning 'because of' is standard modern English. The old objection that it must follow a form of 'be' is history, not a rule.

Between you and me

After a preposition, a pronoun takes the object form - me, him, her, us, them - because it is the preposition's partner. Apply the Preposition Test: find the preposition, then find its whole partner. In 'between you and me', the partner is 'you and me', and every pronoun inside that partner stays in object form.

Subject formObject form (after a preposition)
Ime - with me, between you and me
he / shehim / her - for him and her
weus - to us, for us students
theythem - among them

The one-second test: remove the other person.

The same test handles a pronoun followed by a noun: 'us students', 'we students'. Remove the noun and read what is left.

SentenceRemove the nounCorrect form
The talk was for we students.for we? ❌for us students
Us students organised the fair.Us organised? ❌We students organised the fair.
The prize went to we three.to we? ❌to us three
Why the slip happens: children are often corrected from 'Me and Ravi went' (subject position) to 'Ravi and I went'. Many take away a simpler lesson - 'and I is the polite form' - and carry it into object position, where it does not belong. The result is a hypercorrection: an error caused by over-applying a correction. Correct it kindly; the writer was trying to be careful.

'Myself' is a second escape route people take when unsure: 'Send it to Ravi or myself.' In formal writing, 'myself' is normally reflexive ('I hurt myself') or emphatic ('I did it myself'); after a preposition with another person, 'me' is the standard choice.

Picture a preposition as a gate with a sign that reads 'objects only'. Everything that passes through the gate as its partner - one person or two, joined by 'and' or not - must show its object ticket: me, him, her, us, them. 'I' is holding a subject ticket, and it does not become valid just because it walked through arm in arm with 'you'.

Politeness and order are separate from case. English convention puts the other person first - 'my sister and me', 'Ravi and I' - as a courtesy. But order does not change the form: 'between me and you' is informal in order, yet correct in case; 'between you and I' is polite in order, but wrong in case. Get the case from the preposition; get the order from courtesy.

Here is where it gets genuinely hard. 'Between you and I' has a long history. It turns up in older literature - Shakespeare has 'all debts are cleared between you and I' in The Merchant of Venice - and many fluent speakers use it today. Some linguists argue that, for these speakers, 'you and I' has become a fixed unit that behaves like a single pronoun, so the usual case rule does not reach inside it. That is an interesting description of how some people speak. It is not how formal written English works now. Style guides, editors and exam markers on both sides of the Atlantic treat 'between you and me' as the standard form, and 'between you and I' as an error in formal writing. So the honest position has two parts. First, the speaker who says 'between you and I' is not ignorant or careless - they are following a real, widespread pattern, often learned from being corrected too hard. Second, in writing for a formal reader, use 'me'. Knowing both lets you write correctly and judge other people fairly.

Two emails from the same student, one word apart. 'Thank you for inviting my parents and me to the ceremony.' 'Thank you for inviting my parents and I to the ceremony.' The second was written by someone trying hard to sound polite - 'my parents and I' sounds like what careful people say. And in subject position it would be right: 'My parents and I will attend.' But here 'for inviting' has an object: 'my parents and me'. Take away the parents and it is obvious: 'thank you for inviting me', never 'for inviting I'. The surprise is that the error came from good manners. The student was being careful - just in the wrong place. One second with the test would have caught it.

'Than me' and 'than I' are a different question, taken up in chapter 4 on pronouns; this section is only about pronouns after prepositions. In casual speech, 'between you and I' is common and rarely misunderstood. Correcting a friend mid-conversation is unkind and usually unnecessary. The standard matters most in formal writing, exams and applications.

  1. After a preposition, use me, him, her, us or them.
  2. Find the preposition's whole partner - 'you and me' - and keep every pronoun in it in object form.
  3. Remove the other person and read what is left.
  4. For 'between', swap the order in your head ('between me and you') to hear the form.
  5. Remove the noun in 'us students' or 'we students' and choose the form that fits.
  6. Put the other person first for courtesy, but take the case from the preposition.
  7. Use 'me', not 'myself', after a preposition with another person in formal writing.
  8. Correct others kindly: the slip usually comes from trying to be correct.
You can now choose the right pronoun after a preposition, even in a pair. A pronoun that is a preposition's partner takes the object form: me, him, her, us, them. That stays true when two people are joined by 'and': between you and me, for my sister and me, with Asha and him. The test is to remove the other person and read what is left. 'For I' is obviously wrong, so 'for my sister and I' is too. 'Between you and I' is a hypercorrection - an error caused by over-applying the lesson that 'and I' is polite. It has a long history and many fluent users, but formal writing uses 'me'. The same test handles 'us students', and courtesy decides the order, not the case.

Agree with, agree to, agree on

With these verbs the preposition is part of the meaning. Apply the Preposition Test: find the preposition and its partner, then ask what kind of partner it is - a person, a proposal, a point to decide, a thing, a situation. The kind of partner usually tells you the preposition.

PatternPartnerMeaningExample
agree witha person, or an opinionshare their viewI agree with Priya.
agree toa proposal, request or termsaccept it; say yesShe agreed to the plan.
agree on / abouta point to be settledreach the same decisionWe agreed on a date.
angry with (AmE also angry at)a personyou blame themMum was angry with me.
angry abouta situation or eventit upsets youShe was angry about the delay.

Some verbs change meaning completely with the preposition - these are often called prepositional verbs, and each pair is worth learning as its own word.

PairMeaningExample
look atdirect your eyes toLook at this photo.
look forsearch forI'm looking for my keys.
look aftertake care ofShe looks after her grandmother.
think ofbring to mind; have an opinion (What do you think of it?); consider as an ideaCan you think of a name?
think aboutconsider for a time; reflectI'm thinking about the offer.
care about / care forfeel it matters / look after (or like)I care about fairness. She cares for her father.
The working rule: identify the kind of partner first - person, proposal, point, object, situation - and the preposition usually follows. Where 'think of' and 'think about' overlap ('I often think of/about home'), both are standard; choose 'about' for longer reflection and 'of' for a quick thought or an opinion.

Picture a verb as a key and each preposition as a different cut on its blade. 'Agree' cut with 'with' opens the door to a person's opinion. Cut with 'to', it opens a contract. Cut with 'on', it opens a meeting room where everyone reaches the same decision. Same key handle, different doors - so check which door you want before you turn it.

Adjectives and nouns follow the same logic. 'Good at maths' (skill) but 'good for you' (benefit) and 'good to me' (kind). 'Responsible for the project' (duty) but 'responsible to the manager' (answerable). 'An answer to the question' but 'the reason for the delay'. The kind of partner still predicts the preposition.

Here is where it gets genuinely hard. Some pairs overlap so much that the difference is a matter of emphasis, not rule. 'I'm thinking of moving' and 'I'm thinking about moving' are both standard and mean nearly the same - perhaps 'of' suggests a plan forming, 'about' a longer weighing up. 'We agreed on a price' and 'We agreed about the price' are close too, though 'on' sounds more like a settled outcome. Other pairs look overlapping but are not. 'What do you think of the film?' asks for your opinion. 'What do you think about the film?' can ask the same, or can ask what thoughts it prompted in you. 'Care for' can mean 'look after' ('She cares for her mother') or, especially in older or formal English, 'like' ('I don't care for coffee'). The skill is not memorising a single meaning per pair. It is noticing which pairs are genuinely different (agree with / to, look at / for / after) and which overlap (think of / about), and never marking an overlapping choice wrong. When you write, choose the one that says your meaning most exactly.

One preposition, and a family argument. 'Priya is angry with her brother.' 'Priya is angry about her brother.' In the first, Priya blames her brother. He did something, and she is cross at him. In the second, she may not blame him at all. Perhaps her brother is ill, or has been treated unfairly, and she is angry about the situation - possibly on his behalf. Same girl, same brother, same adjective. In one sentence he is the culprit; in the other he may be the victim. If Priya's mother read the wrong one, dinner could go very differently.

American English often uses 'angry at' a person, and it is standard there; British English more often uses 'angry with'. Neither is wrong. Some pairs have meanings that vary with context and register, like 'care for'. And 'agree about' and 'agree on' overlap widely. Mark a choice wrong only when the meaning clearly changes.

  1. Find the preposition and its partner, and name what kind of partner it is.
  2. Use agree with for a person or opinion, agree to for a proposal, agree on for a point to settle.
  3. Use angry with (or AmE angry at) for a person, angry about for a situation.
  4. Keep look at, look for and look after apart - each is its own verb.
  5. Choose think about for longer reflection and think of for a quick thought or an opinion, knowing both often work.
  6. In consent forms and contracts, check whether you mean 'agree to' or 'agree with'.
  7. Do not mark variety differences like 'angry at' wrong.
  8. Learn each genuinely different pair as its own meaning, not as a verb plus decoration.
You can now choose the preposition that gives a verb the meaning you want. Some verbs and adjectives take several prepositions, each with its own meaning. Agree with a person or opinion; agree to a proposal; agree on a point. Look at, look for and look after are three different verbs. Angry with a person, angry about a situation - and American English also says angry at. The Preposition Test helps: find the partner, name what kind it is, and the preposition usually follows. Some pairs overlap - think of and think about, agree on and about - and both choices are standard there. The skill is telling genuinely different pairs from overlapping ones, and choosing the one that says exactly what you mean.

Different from, than, to

Varying pairs still have a preposition and a partner - the Preposition Test finds them as usual. What changes is which preposition a community of speakers habitually uses with that partner. The job here is to describe, not to police.

PairAccepted everywhereCommon in AmECommon in BrE
differentdifferent fromdifferent thandifferent to
the weekend-on the weekendat the weekend
the street-on the streetin the street (on also common)
boredbored with, bored bybored of - newer and informal, common especially among younger speakers; some readers dislike it
comparedcompared to and compared with are both used; a traditional distinction is described below

'Compared to' and 'compared with' carry a traditional distinction that many careful writers still observe, though everyday usage blurs it.

FormTraditional useExample
compare X to Yliken X to Y; point out a similarityShe compared her brother to a hurricane.
compare X with Yexamine the similarities and differencesWe compared this year's results with last year's.
compared to/with (participle)both widely used for measurementPrices are high compared to/with last year.
'Different than' has a practical advantage before a clause: 'The town is different than it was' is shorter than 'different from what it was'. That is one reason it appears in British writing too. Grammar is not only geography.

The working rule for all these pairs: if you know your reader's variety, use its form. If you do not, use the form accepted everywhere. Either way, be consistent - switching between 'at' and 'on the weekend' in one essay looks careless, even though each is correct.

Picture English as a big city with several neighbourhoods. In one, people say 'at the weekend'; two streets away, 'on the weekend'. Both are the city's language. A visitor who says 'different to' in the American quarter is not wrong - just recognisably from elsewhere. The skill is knowing which neighbourhood your reader lives in, and speaking so they feel at home.

Indian English often follows British patterns for these pairs - 'at the weekend', 'different from' or 'different to' - while American media spreads 'on the weekend' and 'different than'. Many Indian students mix the two without noticing. Choosing one variety per piece, usually the one your exam board or reader expects, solves the problem neatly.

Here is where it gets genuinely hard. Variation is not only by country. It is also by age, register and time. 'Bored of' was rare in print a few decades ago and is now common in informal British English, especially among younger speakers - and it is spreading. Older readers are more likely to notice it and dislike it. Usage guides describe it as increasingly common and not yet fully accepted in formal writing. So 'Is bored of correct?' has no single answer. It depends on who is reading and when. In a text to a friend, it is normal. In a formal essay for a traditional examiner, 'bored with' is safer - not because 'of' is wrong, but because it may cost you with that reader. This is uncomfortable if you want a rulebook. But it is how language actually works: forms appear, spread, meet resistance, and sometimes become standard. 'Due to' meaning 'because of' went through exactly that journey (S26). The mature position is to describe what people do, notice who objects, and choose with your eyes open.

Two sentences from two newspapers on the same day. 'The new policy is very different to the old one,' says a London paper. 'The new policy is very different than the old one,' says a New York paper. A student in Mumbai, taught 'different from', might think both editors made a mistake. They did not. Each followed the habit of its own readers, and each sentence was checked by professional copy editors. Now the surprise: if the student writes 'different from', both papers would accept it. The form accepted everywhere is not the 'most correct' one - it is simply the one no reader anywhere will stumble over. When you do not know your reader, that is a very useful thing to have.

Descriptions like 'common in AmE' and 'common in BrE' are tendencies, not borders. Many British writers use 'on the weekend', and 'different from' is common in both. If an exam board or teacher states a preference, follow it for that reader - that is choosing by reader, which is exactly what this section teaches. Just do not carry that preference into judging everyone else's English.

  1. Find the preposition and its partner, then ask whether this pair varies.
  2. If you know the reader's variety, use its form.
  3. If you do not, use the form accepted everywhere: different from, bored with.
  4. Stay consistent within one piece - one weekend preposition, one variety.
  5. Treat 'bored of' as informal and spreading; prefer 'bored with' for a traditional formal reader.
  6. Use 'compare to' for likening and 'compare with' for a close comparison when you want to be precise.
  7. Never mark a variant wrong unless the task names the variety or register.
  8. When challenged, explain your choice by reader and variety, not by an invented rule.
You can now describe variation in prepositions instead of policing it. Some pairs genuinely vary. 'Different from' is accepted everywhere; 'different than' is common in American English; 'different to' is common in British English. 'On the weekend' is American, 'at the weekend' British. 'In the street' and 'on the street' both occur. 'Bored of' is newer and informal beside 'bored with' and 'bored by'. 'Compared to' and 'compared with' overlap, with a traditional distinction between likening and close comparison. The Preposition Test finds the pair; the reader decides the form. If you know the reader's variety, use it. If not, use the form accepted everywhere. Always be consistent. And never mark a variant wrong unless the variety or register is named.

Edit for a real reader

Four decisions, each with its own test. The Preposition Test comes first every time: find the preposition and its partner, name the relation, and ask whether this reader will read it the way the writer meant.

DecisionWhenExample
CutIt pads, or chains nouns the reader must untanglewith regard to the trip → about the trip
SwapThe word cannot take this partner, or means something elsedespite it may rain → although it may rain; Ms Rao or I → Ms Rao or me
MoveThe phrase has two possible ownersmeet the teachers with the forms → bring their forms and meet the teachers
KeepIt is standard and clear, even if a myth says otherwisea trip every child will learn from

Then rank by cost to the reader.

Here is the notice again, edited for parents, with each decision named.

OriginalDecisionEdited
the children will meet the teachers with the permission forms at the gateMove - two owners; the intended reading is that children bring the formsChildren should bring their permission forms and meet the teachers at the gate.
With regard to the tripCut - paddingAbout the trip: (or delete)
Despite it may rainSwap - 'despite' cannot take a clauseAlthough it may rain / Even if it rains
to Ms Rao or ISwap - object form after 'to'to Ms Rao or me
The results of the review of the safety of the busCut - untangle the chain with a verbWe have checked the bus for safety and will share the results on Friday.
every child will enjoy and learn fromKeep - standard stranding(unchanged)
Ranked for a parent: the forms first - a family that reads it the wrong way sends a child without a form. Then the two errors, which make the school look careless. Then the chain and the padding. And the final 'from' stays: moving it ('a trip from which every child will learn') would only make a friendly notice stiff.

Picture yourself as a guide leading one particular person - a parent, a teacher, a stranger - along a path of sentences. Each preposition is a signpost. Some point the wrong way: fix those first, before anyone gets lost. Some are misspelled: fix them next, because they make the traveller doubt the guide. Some are cluttered: tidy them when there is time. And some only look odd to a nervous guide - leave those standing; the traveller reads them perfectly.

Some edits combine. Untangling 'the results of the review of the safety of the bus' with a verb also removes the need for 'with regard to', because the new sentence names its topic directly. Before making five separate edits, check whether one rewrite solves three of them - but only if it keeps every fact and the writer's tone.

Here is where it gets genuinely hard. The same fault can cost different readers differently. 'Ms Rao or I' costs a parent almost nothing - they still know whom to email - but in a job application it might cost an interview, because the reader is judging precision. The permission-form ambiguity costs a parent a great deal; in a school newsletter article about last year's trip, it might cost nothing, because nobody needs to act on it. So you cannot rank faults from a list. 'Errors before padding' is a good default, but 'anything that makes the reader act wrongly' outranks both, and what counts as acting wrongly depends entirely on who is reading and why. And the 'keep' decisions are the hardest of all, because they ask you to resist the urge to fix. A nervous editor pied-pipes every final preposition and changes every 'different than'. A good editor asks, for each: does this cost this reader anything? If not, the best edit is none. Editing is not finding everything unusual. It is serving one reader, and knowing when to leave well alone.

One notice, two readers, two different first edits. The council's notice goes to parents. The first fix is the permission forms, because a misread sends a child without one. The 'or I' can wait. Now imagine the same council president copies a sentence from it into an application for a leadership programme: 'Please send any questions to Ms Rao or I.' The reader is a selection panel judging how carefully she writes. Suddenly that pronoun is the most expensive fault on the page, and the permission forms do not matter at all. Same words. Same errors. The ranking flipped because the reader changed. That is the whole of Craft in one example: every preposition decision is made for someone.

Some institutions have house styles - a school that always pied-pipes in formal letters, a newspaper that insists on 'different from'. Follow a house style when you are writing for that house; it is simply a named reader. And in an exam editing task with a fixed number of errors, the marker wants the errors found. The 'keep' judgment still matters, though: changing a correct stranded preposition may cost you a mark.

  1. Name the reader before you edit anything.
  2. Apply the Preposition Test to each choice: find the partner, name the relation.
  3. Decide cut, swap, move or keep for every prepositional choice.
  4. For an ambiguity, state the intended reading before moving anything.
  5. Rank by cost: wrong action first, errors next, padding and chains last.
  6. Leave stranded prepositions, regional variants and standard 'due to' alone.
  7. Look for one rewrite that solves several faults without losing a fact.
  8. Keep the writer's voice; edit what costs the reader, not what you would have written differently.
You can now edit the prepositions in a real passage for a real reader. Every choice gets one of four decisions. Cut padding and chains of 'of'. Swap a word that cannot take its partner ('despite it may rain') or a pronoun in the wrong case ('Ms Rao or I'). Move a phrase with two owners - after stating which reading is meant. Keep what is standard, including a stranded preposition at the end. The Preposition Test comes first each time: find the partner, name the relation, and ask how this reader will read it. Then rank by cost. Anything that could make the reader act wrongly comes first; errors that make them doubt the writer next; padding last. And remember that the ranking depends on the reader. Some faults are expensive for everyone; most are expensive for someone.

Thinking like a writer · ages 16–19

What counts as a preposition?

The Preposition Test does all the sorting here: find the small word, find its partner, then take the partner away. What differs between the two grammars is only what they call the result.

SentencePartner (complement)Traditional labelCGEL (2002) label
We left before lunch.noun phrase - lunchprepositionpreposition with a noun-phrase complement
We left before the film ended.clause - the film endedsubordinating conjunctionpreposition with a clause complement
I have met her before.noneadverbpreposition without a complement
She went inside.noneadverb (Quirk et al. 1985: prepositional adverb)preposition without a complement
They live abroad.none, everadverbpreposition that never takes a complement

Why would a grammar move 'before we left' out of the conjunctions? Huddleston and Pullum give reasons of consistency, not of taste.

ArgumentWhat it points to
Verbs already work this way'eat' is a verb in 'she ate lunch' and in 'she ate'. Nobody calls the second one an adverb. CGEL treats 'inside the station' and 'inside' the same way: one word, with or without a complement.
Same meaning, same modifiers'right before lunch', 'right before we left', 'right before' - the same modifier fits all three, which suggests one class.
A smaller conjunction classCGEL moves most traditional subordinating conjunctions ('after', 'since', 'until', 'because', 'although') into the prepositions and keeps only a few subordinators, such as 'that', 'whether' and 'if'.
Words that never take a complement'abroad', 'downstairs', 'overseas' behave like 'inside' used alone, so they join the same class.
This is the same position Chapter 6 S31 met from the adverb side: 'went outside' is a prepositional adverb for Quirk et al. and a preposition without a complement for Huddleston and Pullum. Both grammars describe the same facts. They file them differently.

Picture a socket on a wall. A traditional grammar names the socket by what is plugged into it: with a lamp it is one thing, with a kettle another, empty it is a third. CGEL names the socket as a socket, and then says what, if anything, is plugged in. The wall has not changed - only the labelling scheme has.

Once you see complements as the variable, a scale appears. Some prepositions must have a noun phrase ('of', 'from', 'during'). Some take a noun phrase or a clause ('before', 'after', 'since', 'until'). Some take a noun phrase or nothing ('inside', 'outside', 'above', 'underneath'). A few never take anything ('abroad', 'downstairs'). The class is held together by meaning and position, not by one fixed pattern.

Here is the case that does not settle neatly. 'They went home.' Traditional grammar calls 'home' an adverb here, or a noun used adverbially. It answers where, takes no 'to' ('went to home' is not standard), and cannot take 'the'. In many ways it behaves exactly like 'abroad' or 'inside' used alone - which would make it a preposition without a complement in the CGEL scheme. But 'home' is also plainly a noun: 'my home', 'a new home', 'homes for sale'. And it can take a complement-like phrase only in a few set uses ('home to millions', where it is still a noun). So is the 'home' in 'went home' the noun with a missing preposition, or a separate word in another class? Grammarians do not agree, and the evidence genuinely pulls both ways. The honest Master answer lays out what 'home' does - no article, no preposition before it, answers where - and names the two analyses, instead of pretending the word has a single obvious label.

One word, three partners, and a change of meaning you can hear: 'I have not seen him since Monday.' 'I have not seen him since he moved.' 'I have not seen him since.' In every one, 'since' means 'from that point until now', and in every one the Preposition Test finds a different partner: a noun phrase, a clause, and nothing at all. The traditional grammar gives you three labels. CGEL gives you one word with three kinds of complement. Now the twist: 'Since he moved, the house has been empty' can also be read as 'because he moved'. That second 'since' - the causal one - is a different use, and it only ever takes a clause. So the word you thought had three labels actually has two meanings, and the labels do not line up with the meanings at all.

The traditional analysis is not wrong; it is older and more widely taught. Most Indian board syllabuses, most school textbooks and many dictionaries label 'before' in 'before we left' a conjunction and 'inside' in 'went inside' an adverb. In a labelling question, that is the answer the marker expects. The CGEL view is influential in university linguistics and increasingly in reference grammars, but it is one analysis among several. Neither grammar is quoted here; both positions are paraphrased.

  1. Run the Preposition Test first: find the word, find what follows, take it away.
  2. Name the complement - noun phrase, clause, or none - before you name the class.
  3. In a board labelling question, use the traditional label: preposition, conjunction or adverb.
  4. In an essay or analysis question, you may give the CGEL analysis, but say it is Huddleston and Pullum's.
  5. Never mix the two schemes in one answer without saying so.
  6. Keep 'that', 'whether' and 'if' as subordinators, and infinitive 'to' as a marker, in both schemes.
You can now hold two definitions of the class at once. Traditional grammar defines a preposition by what follows it: a noun phrase makes it a preposition, a clause makes it a subordinating conjunction, and nothing makes it an adverb. 'Before lunch', 'before we left' and 'before' get three labels. Huddleston and Pullum's Cambridge Grammar (2002) keeps the word in one class and lets it take a noun phrase, a clause, or no complement, as verbs take an object or not. Under that view, 'before we left' and 'went inside' both contain prepositions, and words like 'abroad' are prepositions that never take a complement. Both grammars need the same fact: what the complement is. The Preposition Test finds it. Choose the scheme the question expects, say which one you are using, and leave hard cases like 'went home' honestly open.

The spatial core

The Preposition Test still starts every analysis: find the preposition and its partner, and ask what relation it names. Here the question is sharpened to one word: what shape does the preposition give its partner?

Image schemaSpaceTimeStates and ideas
container - inin the box, in Chennaiin June, in 1998 (a stretch with an inside)in love, in trouble, in doubt
surface - onon the table, on the wallon Monday, on 4 May (a day as a platform)on fire, on duty, on strike (an active state you rest upon)
point - atat the door, at the stationat five o'clock, at noonat peace, at risk, at war
path - through, acrossthrough the tunnel, across the roadthrough the night, across the decadethrough a crisis, across the argument

The strongest evidence for the schemas is contrast: change the preposition, keep the noun, and the picture changes in a predictable way.

PairSchema shiftMeaning shift
at the meeting / in the meetingpoint / containerpresent at the event / inside the room, taking part
in the car / on the buscontainer / surfacea small enclosed space / a large vehicle you stand and walk on
in time / on timecontainer / point on a scheduleearly enough, inside the window / exactly at the set time
in the field / on the fieldcontainer / surfaceinside a bounded area (or a profession) / on the playing surface
over the moon / under pressureup / down orientationLakoff and Johnson's orientational metaphors: happy and in control are up; sad and burdened are down
The schemas explain motivation, not obligation. They tell you why 'in love' makes sense. They do not tell you that 'on love' is impossible - convention does that. Use the pictures to understand and remember, and a dictionary to confirm.

Think of four stencils on a desk: a box, a tabletop, a dot and an arrow. Every time English places something - an object, a day, a feeling, an idea - it reaches for one of the stencils and traces the thing through it. 'In love' is love traced through the box. The stencils are few; what they are pressed onto is endless.

Once the four schemas are clear, the time system falls out of them. 'At' takes clock times, which are points. 'On' takes days and dates, which are units you stand on. 'In' takes months, years, seasons and parts of the day, which are stretches with an inside. The irregular cases - 'at night', 'at the weekend' - are where a stretch is treated as a point, and they are few enough to learn.

Here is where the framework gets hard to use honestly. 'She is in the team' (British English) and 'She is on the team' (American English). One variety pictures a team as a container you are inside; the other as a surface or platform you stand on. Both pictures fit a team. So the schema can explain either choice after the fact - but it could not have predicted which one each variety would pick. That is the central limit. Image schemas are strong at explaining why a use makes sense and at helping you remember it. They are weak at predicting which of several sensible uses a language has settled on. Now add 'interested in', 'good at', 'afraid of', 'married to'. A container story for 'interested in' can be told - interest as a space you enter - but a parallel story would justify 'interested on' or 'interested at' just as well, and English does not allow them. The Master position is to state both halves: the schemas motivate a large, systematic part of the system, and a residue of fixed pairings must simply be learned.

Change one preposition and a whole situation changes shape: 'The doctor is in the hospital.' 'The doctor is at the hospital.' With 'in', the hospital is a container, and the doctor is somewhere inside the building. With 'at', the hospital is a point on a map - the doctor is there as a place of work, and could be in the car park. Now try 'The patient is in hospital' in British English, with no article at all. The building has become an institution you are inside as a patient, so 'in hospital' means receiving treatment, not just being within the walls. American English says 'in the hospital' for the same meaning. One noun, three pictures, three different facts about where a person is and why.

Image schemas are a framework from cognitive linguistics, not a settled law of grammar. The term and the approach are associated with George Lakoff and Mark Johnson (Metaphors We Live By, 1980) and were developed in Johnson's later work; other linguists describe the same data in other ways. No quotation from these works is used here; their ideas are paraphrased. In an exam, a schema is a justification, not an authority. If a paper keys 'interested in', no picture will argue for anything else.

  1. Run the Preposition Test, then ask what shape the preposition gives its partner: box, surface, point or path.
  2. Explain a contrast pair by the schema that changes, not by the noun.
  3. Use 'at' for points, 'on' for days and surfaces, 'in' for stretches and containers - then learn the few exceptions.
  4. Treat dependent prepositions ('good at', 'married to') as fixed chunks and say so.
  5. Label AmE/BrE pairs as variety choices, not schema errors.
  6. Confirm a new combination in a dictionary before defending it with a picture.
You can now see the pictures under the prepositions. Four image schemas carry most of the system: the container ('in'), the surface ('on'), the point ('at') and the path ('through', 'across'). Cognitive linguists, following work such as Lakoff and Johnson's Metaphors We Live By (1980), argue that we map time, states and ideas onto these shapes. The mapping explains a great deal: 'in June' but 'on Monday' and 'at five'; 'in love', 'on fire', 'at peace', 'through a crisis'; 'at the meeting' against 'in the meeting'. It also has a clear limit. The schemas explain why a use makes sense, but not always which sensible use a language chose - 'in the team' and 'on the team' both fit. And dependent prepositions like 'interested in' and 'married to' are conventions to learn. Use the pictures to reason; use convention to confirm.

Attachment in legal and technical writing

The Preposition Test finds each phrase and its partner. Attachment adds the next question: which word in the sentence does the whole phrase belong to?

DraftPhrasePossible attachmentsConsequence
Clean the filter in the machine with the brush.in the machinethe filter (the one inside) / clean (do the cleaning inside the machine)remove the filter first, or not?
Clean the filter in the machine with the brush.with the brushclean (the tool) / the machine (the one fitted with a brush)which tool to use
Staff with children under five in the building may leave early.in the buildingthe children / staffwho qualifies for early leave
A refund within 30 days of receipt of the goods by the client.by the clientreceipt / the goods / refundwhen the clock starts, and who acts

Four techniques remove most attachment ambiguity. Each one works by giving the phrase only one possible host.

TechniqueBeforeAfter
Move the phrase next to its hostClean the filter in the machine with the brush.With the brush, clean the filter while it is still in the machine.
Split the chain into a clausewithin 30 days of receipt of the goods by the clientwithin 30 days after the supplier receives the goods from the client
Repeat the nounStaff with children under five in the building may leave early.Staff whose children under five are in the building may leave early.
Number the conditionsTenants with pets or children in flats above the ground floor must ...A tenant must ... if (a) the tenant has a pet or a child, and (b) the flat is above the ground floor.
Courts in many common-law systems use an interpretive rule of thumb, often called the rule of the last antecedent: a qualifying phrase is read as attaching to the nearest word it can describe. It is a presumption, not a guarantee. A drafter who relies on it has left the question for someone else to decide.

Picture every prepositional phrase as a tag on a string, and every noun and verb as a hook. In speech, the listener hangs each tag on the nearest sensible hook. In a contract, imagine a reader who will hang it on any hook the grammar allows. Good drafting removes the hooks you did not mean.

Attachment ambiguity grows with the number of possible hosts. One prepositional phrase after a verb and a noun has two readings. Two phrases in a row can have several, because the second phrase may attach to the verb, to the first noun, or to the noun inside the first phrase. Each extra phrase multiplies the work, which is why long chains are where legal and technical errors cluster.

Here is the case where common sense does not rescue the reader. 'The company will reimburse travel expenses for employees attending conferences in Europe.' Does 'in Europe' attach to 'conferences' (only conferences held in Europe) or to 'employees' (only employees based in Europe)? Both readings are sensible, and they cover different people: an employee in Mumbai flying to a conference in Berlin is covered on the first reading and not on the second. The rule of the last antecedent would favour 'conferences', the nearest noun. But a court might look at the company's other policies, its past practice, or the purpose of the clause, and reach the other answer. Different systems weigh those factors differently. So the honest answer to 'what does this sentence mean?' is: it has two grammatical readings, a presumption favours one of them, and the drafter has left the final decision to someone else. At Master, you are expected to see both readings and to redraft - 'employees who attend conferences held in Europe' or 'employees based in Europe who attend conferences' - rather than to defend the draft.

Watch one small movement change who is responsible: 'The engineer must inspect the valves on the ground floor before the test.' Is the engineer on the ground floor, or are the valves? Probably the valves. Now move the phrase: 'On the ground floor, the engineer must inspect the valves before the test.' Now the whole inspection happens on the ground floor, and valves elsewhere may be included, as long as they are inspected from there. And once more: 'The engineer must inspect, before the test, the valves on the ground floor.' This version separates the time phrase from the place phrase, so each has only one possible host. Three orders, the same words, and three different instructions for where the engineer goes and which valves count.

The examples in this section are invented for teaching; none is quoted from a real contract or manual. The rule of the last antecedent is described generally as a common-law interpretive presumption; how strongly it applies, and what can override it, differs between legal systems and courts. Plain-language drafting movements in several countries recommend short sentences and active verbs for the same reasons given here, but this section is not legal advice.

  1. Run the Preposition Test on every phrase, then list every noun and verb it could attach to - not just the one you meant.
  2. Move a phrase so that it sits directly beside the word it describes.
  3. Break chains of 'of' into clauses with a subject and a verb, so each role has its own word.
  4. Repeat a noun, or use 'whose', 'which' or 'who', when a phrase could float between two hosts.
  5. Number conditions instead of stacking them in one long phrase.
  6. Recheck after every redraft; a fix in one place can create a new ambiguity in another.
  7. Never rely on the nearest-noun presumption to rescue a clause you could have written clearly.
You can now treat attachment as a drafting problem. Every prepositional phrase attaches to one word in the sentence, but the grammar often allows more than one host. In conversation, context settles it. In legal and technical writing, readers who are hostile, hurried or absent make the second reading a real risk. The method is mechanical: find each phrase, list every word it could attach to, and redraft until only one attachment is possible. Four techniques do most of the work. Move the phrase next to its host. Split a chain of 'of' into a clause with a verb. Repeat the noun or use a relative clause. Number the conditions. Courts often presume a phrase attaches to the nearest noun - the rule of the last antecedent - but a presumption is not a guarantee. A careful drafter leaves nothing for it to decide.

Stranding and pied-piping

The Preposition Test finds the partner even when it has moved: in 'Who did you give it to?', the partner of 'to' is 'who', sitting at the front. Stranding and pied-piping are the two places the preposition can be when its partner moves.

ConstructionStranded (preposition stays)Pied-piped (preposition moves)Register
wh-questionWho did you give it to?To whom did you give it?everyday / formal
wh-relativethe house which she lives inthe house in which she livesneutral / formal
that-relativethe house that she lives innot possible: *the house in that she livesstranding only
zero relativethe house she lives innot possible - nothing to carrystranding only
passiveThe bed has been slept in.not possiblestranding only

The ban has a traceable history. It is not in the grammar of English; it was added to the teaching of it.

PeriodWhat happened
Old and Middle English onwardStranding is found throughout the history of English, in ordinary and literary writing alike.
1672The poet John Dryden criticised Ben Jonson for ending a line with a preposition - one of the earliest recorded objections, usually linked to admiration for Latin, where the construction is not possible.
1762Robert Lowth's grammar described stranding as natural in conversation and familiar writing, and pied-piping as more graceful for a solemn style - a register judgment later hardened into a rule by others.
TodayModern reference grammars and usage guides describe stranding as fully standard; some formal registers still prefer pied-piping where it is possible.
A familiar joke mocks the rule with the phrase 'up with which I will not put'. It is often pinned on Winston Churchill, though the attribution is doubtful. The joke works because 'put up with' is a three-part verb, and pied-piping part of it produces nonsense.

Picture a preposition as a porter standing beside a suitcase, its partner. When the suitcase is sent to the front of the sentence, the porter can wave it off and stay at the gate - stranding - or pick it up and travel with it - pied-piping. Some gates, like 'that' and the passive, have no room for the porter to travel, so it always stays.

Once the two patterns are clear, a scale of formality appears. The most informal choice is a zero relative with stranding: 'the person I spoke to'. Next is 'that' or 'who' with stranding: 'the person who I spoke to'. Most formal is pied-piping with 'whom': 'the person to whom I spoke'. All three are standard; they sit at different points on the register scale, and a writer moves along it for the reader.

Here is a case where neither pattern is comfortable, and the honest answer is to rebuild. Start with the prepositional verb 'depend on' in a formal relative clause: 'the figures on which the report depends'. That is fine. Now try a three-part verb: 'put up with'. Stranding gives 'the noise that residents have to put up with' - natural, and the only option in speech. Pied-piping gives 'the noise with which residents have to put up' - grammatical to some ears, absurd to others, because 'up' is left stranded in a way that exposes the split. Or take a heavy preposition like 'notwithstanding' or 'in accordance with'. 'The regulations in accordance with which the firm acted' is correct and very stiff; 'the regulations the firm acted in accordance with' is correct and loose. For a formal report, neither may be ideal. The Master move is to notice when both options strain and to change the structure instead: 'the noise residents must tolerate', 'the regulations the firm followed'. A different verb, not a different preposition position, solves it. Register choice includes the choice to rephrase.

Here is a sentence where moving the preposition changes more than register: 'What did you come here for?' 'For what did you come here?' The first is an ordinary question about purpose. The second is grammatical, but almost nobody says it: 'what ... for' meaning 'why' has become a fixed pattern that strongly prefers stranding. Now compare 'What is this tool for?' with 'For what is this tool?' The second sounds like a translation. And 'Where are you from?' has no natural pied-piped version at all: 'From where are you?' is understood but is not everyday English. The lesson is that the ban did not just prefer a formal option. In some of the commonest questions in the language, it demanded one that speakers do not use.

The historical claims here are stated as they are usually reported: Dryden's criticism of Jonson (1672) and Lowth's register comment (1762) are paraphrased, not quoted. The Churchill joke is described with its doubtful attribution. Some style guides for very formal writing, and some teachers, still prefer pied-piping where it is possible. That is a legitimate register preference. What is not supported is marking a stranded preposition as a grammatical error.

  1. Run the Preposition Test and find the partner, even when it has moved to the front of the clause.
  2. Use stranding by default in speech, email and most writing.
  3. Use pied-piping with 'which' or 'whom' when a formal register asks for it.
  4. Never pied-pipe with 'that' or a zero relative, and never with a passive.
  5. After pied-piping, check that the preposition has not been left behind as well.
  6. Keep phrasal-verb particles at the end; they cannot travel.
  7. If both options strain, change the verb or rebuild the clause.
You can now place a preposition by register, and know when grammar decides for you. When a preposition's partner moves to the front, the preposition can stay behind - stranding: 'Who did you give it to?' - or move with it - pied-piping: 'To whom did you give it?'. The term pied-piping comes from John Robert Ross (1967). Both are standard. Stranding is the everyday pattern; pied-piping is more formal. 'The house that she lives in' and 'the house in which she lives' are both correct. Some constructions allow only stranding: that-relatives, zero relatives, passives ('The bed has been slept in') and phrasal verbs ('the word I looked up'). The old ban was a register preference hardened into a rule. Its main surviving damage is the doubled preposition - 'in which she lives in' - and the cure is to check. When both options strain, rebuild the sentence.

Prepositions in academic writing

The Preposition Test still applies to every phrase: find the preposition and its partner, and name the relation. In academic prose, add a second question: does this preposition carry meaning, or only carry another noun?

PaddedExact alternativeWhat changed
on the basis of the datafrom the data / based on the datathree words for one relation
with regard to the policyabout the policy / on the policya simple preposition does the same job
due to the fact that prices rosebecause prices rosea clause after 'because' needs no noun 'fact'
in order to test itto test it'to' already marks purpose
prior to the trialbefore the trialsame meaning, plainer word
the reduction of the cost of fuelwhen fuel became cheapera verb replaces two 'of' links

Some prepositions in academic writing are not padding at all: they fix the size and direction of a claim. Getting them wrong changes what the writer is saying.

ChoiceMeaning
the effect of sleep / the effect on sleepsleep is the cause / sleep is what is affected
an increase in prices / an increase of 5%'in' names what rose; 'of' names the amount
consistent with the hypothesis / proof of the hypothesisdoes not contradict it / establishes it - a much larger claim
evidence for a claim / evidence of a processsupporting an argument / showing that something happened
differences between the three groupsstandard for separate, pairwise comparisons, even with more than two
in terms of cost, A is cheaper; in terms of speed, Ba genuine use: it names the dimension of comparison
The aim is not fewer prepositions. It is prepositions that each do a job a reader can name. A complex preposition that names a dimension earns its place; one that stands in for 'about' does not.

Picture a chain of railway carriages, each coupled to the one before by 'of'. A reader must walk through every carriage to reach the engine - the verb. Unpacking the chain means uncoupling carriages and giving some of them their own engines: short clauses with verbs, each carrying a load the reader can see at once.

Once you can tell a meaning-bearing preposition from a weight-bearing one, you can calibrate claims with them. 'According to' attributes a claim to a source. 'Consistent with' says the evidence does not contradict a view. 'Evidence for' says it supports one. 'Proof of' says it establishes one. Each step claims more, and choosing the right one is part of academic honesty.

Here is a usage dispute that has no clean resolution. 'Based on the survey, we concluded that demand had fallen.' Traditional usage guides object that 'based on' is a participle that should attach to a noun - something must be 'based on' the survey - and here the only candidate is 'we'. We were not based on the survey; the conclusion was. On that view, the sentence has a dangling modifier, and 'On the basis of the survey, we concluded...' is the correct form. Many modern writers and some usage guides treat 'based on' as having become a complex preposition, like 'owing to' or 'according to', which no longer needs a noun to attach to. On that view, the sentence is fine, and the traditional objection is outdated. So the padded 'on the basis of' that the base table recommends cutting is, in this position, the safer form for a conservative reader, and the shorter 'based on' is the natural one for most others. The Master answer names the dispute, chooses by reader, and - if the reader is unknown - rebuilds: 'The survey showed that demand had fallen.' No preposition, no dispute.

One small preposition can double or halve a claim: 'The data are consistent with the theory.' 'The data are evidence for the theory.' The first says only that nothing in the data contradicts the theory - the data might be consistent with three other theories too. The second says the data actively support this one. Now watch 'of' and 'on' swap a research question: 'We studied the effect of exercise on memory.' 'We studied the effect of memory on exercise.' The words are identical, the prepositions are identical, and swapping their partners reverses cause and effect. A reviewer would read the second as a completely different study - perhaps whether people who remember their plans exercise more. The prepositions are small. The claims they set are not.

Recommendations here describe common academic style guidance, not fixed rules. Disciplines differ: legal and some scientific writing keep more nominal phrasing on purpose, for precision or convention. 'Based on' is presented as disputed, with both positions described. 'Compared with' (for finding differences) and 'compared to' (for likening) are traditionally distinguished, but both are widely used in each sense; neither is keyed wrong in this section's items.

  1. Run the Preposition Test, then ask whether each preposition carries meaning or only another noun.
  2. Break chains of three or more 'of' phrases by restoring a verb.
  3. Replace 'on the basis of', 'with regard to' and 'due to the fact that' when a simpler form is exact.
  4. Keep 'in terms of' when it names a dimension of comparison.
  5. Check dependent prepositions in key terms: effect on, impact on, emphasis on, increase in.
  6. Choose calibrating phrases - according to, consistent with, evidence for, proof of - to match your evidence.
You can now tell a preposition that carries meaning from one that carries weight. Academic prose turns processes into nouns, and nouns need prepositions to link them. The result is chains of 'of' that force the reader to hold many nouns before the verb arrives. Restoring verbs unpacks them. Complex prepositions like 'on the basis of', 'with regard to' and 'due to the fact that' can often be replaced by 'from', 'about' and 'because'. But 'in terms of' earns its place when it names a dimension of comparison. Other prepositions fix the claim itself. 'Effect of' and 'effect on' reverse cause and effect. 'Increase in' names what rose; 'increase of' names the amount. 'Consistent with', 'evidence for' and 'proof of' claim steadily more. And 'based on' at the start of a sentence is disputed; choose by reader, or rebuild.

Prepositions across Englishes

The Preposition Test works in every variety: find the preposition and its partner, and name the relation. What differs is which preposition each variety uses for that relation - and sometimes whether it uses one at all.

VarietyPatternMeaning thereExam-standard written form
Indian Englishdiscuss about the plantalk about the plandiscuss the plan
Indian Englishcope up with stressmanage stresscope with stress
Indian Englishsince two yearsfor a period of two yearsfor two years (since 2024)
Indian Englishon tomorrowtomorrowtomorrow - no preposition
Indian Englishpay attention onpay attention topay attention to
British / Americanat the weekend / on the weekendsame meaningboth standard
British / Americanin hospital / in the hospitalsame meaning (as a patient)both standard
British / Americandifferent to / different thansame meaningboth used; 'different from' is safe everywhere

Each Indian English pattern has an internal logic. Describing it is what separates analysis from correction.

PatternA likely sourceWhy it is a pattern, not a slip
discuss aboutthe noun takes 'about' in every variety ('a discussion about'), and many Indian languages mark the topic with a postpositionconsistent, widely used, and parallel to 'talk about'
cope up witha blend with 'keep up with' and 'catch up with'follows the model of common three-part verbs
since two yearsmany Indian languages use one postposition (such as Hindi 'se') for both a starting point and a durationsystematic, often with the present tense: 'I am living here since two years'
on tomorrowextends 'on Monday' to all day wordsregular; other varieties treat tomorrow, next and last as needing no preposition
pay attention onmodelled on 'focus on' and 'concentrate on'a sensible analogy; the standard pairing is a convention
In an exam, write the standard written form the paper expects. In your own speech and writing, the regional form is not a failure of English. It is a choice - and now an informed one.

Picture three accurate maps of the same city, drawn by three survey offices. They agree on every street, but each labels a few junctions with different names. A traveller who knows only one map is not lost - just unready for the signs in another district. Knowing the other names is what lets you move freely.

Once the patterns are named, a sorting emerges. Some differences are between standards (BrE and AmE): both forms are correct, and the choice depends on the paper's variety. Others are between a regional variety and the standard written form: the regional form is systematic, but a formal paper expects the standard. A third group are genuine errors in every variety, such as a doubled preposition. Sorting a form into the right group is the whole skill.

Here is the hard question: who decides what the standard is? There is no single English academy. Dictionaries, style guides, publishers, examination boards and teachers set standards, and they differ between countries. An Indian board examiner, an American test writer and a British editor each apply a standard, and their standards do not agree on every preposition. Consider 'different than'. Many British usage guides once disapproved of it; American dictionaries record it as standard, especially before a clause ('different than it was'). 'Different to' is common in Britain and rare in America. 'Different from' is accepted everywhere. So when a form is marked down, the accurate statement is: 'This form is not part of the variety this paper uses.' That is a fact about the paper. 'This is bad English' is a claim about the language and its speakers that the evidence does not support. And varieties change. Forms that were once regional have entered standard usage elsewhere. Whether Indian English patterns such as 'discuss about' will ever be accepted in formal international writing is an open question. This section cannot settle it; it can make sure you know which standard is being applied, and can say so.

Here is a pair where the same preposition choice means different things to different readers: 'I will see you on the weekend.' 'I will see you at the weekend.' For most American readers, 'on the weekend' is the normal form and 'at the weekend' sounds British. For most British readers, it is the reverse. The meaning is identical - and neither is an error. Now try 'The patient is in hospital.' For a British reader, this is complete and natural. For an American reader, it can sound as if a word is missing: 'in the hospital'. And an Indian English speaker may say either, depending on schooling. Three readers, one sentence, three different impressions of whether it is correct - and all three readers are fluent.

The Indian English patterns described here are widely documented in descriptions of the variety, but not every speaker uses every one, and usage varies by region and schooling. The likely sources given are commonly proposed explanations, not proven histories. Exam types (board, SAT-style, IELTS-style) are described generally; no specific paper, year or mark scheme is cited. Keys in this section that involve a regional form test the variety distinction itself.

  1. Run the Preposition Test, then ask which variety the form belongs to.
  2. In a formal exam, write the standard written form: discuss the plan, cope with, for two years, tomorrow, pay attention to.
  3. Accept both BrE and AmE standard forms unless the paper names a variety.
  4. Use 'different from' when you do not know the reader's variety.
  5. Word a correction as 'not this paper's standard', never as 'bad English'.
  6. Keep 'about' after 'talk' and after the noun 'discussion', where every variety needs it.
  7. When you switch forms for a paper, keep your own form for speech and writing where it serves you.
You can now describe preposition patterns across Englishes without mocking or misplacing them. Indian English has stable, widely shared patterns - 'discuss about', 'cope up with', 'since two years', 'on tomorrow', 'pay attention on' - each with a likely logic: a noun's pattern, a blend with a similar verb, a single postposition for two English meanings, or an analogy with a nearby word. The exam-standard forms are 'discuss the plan', 'cope with', 'for two years', 'tomorrow' and 'pay attention to'. Write them in a formal paper. British and American English differ on several prepositions - 'at/on the weekend', 'in hospital/in the hospital', 'different to/than' - and both members of each pair are standard. 'Different from' is safe everywhere. A correction names the standard: 'not this paper's form'. That is accurate. 'Bad English' is not.

Phrasal or prepositional verb?

The Preposition Test does the first sort: find the small word and take its partner away. If the small word can stand with the verb when the noun phrase moves ('look the word up'), it is a particle. If it must stay attached to the noun phrase, it is a preposition.

TestPhrasal verb: look up the wordPrepositional verb: look after the child
Particle movementlook the word up - fine*look the child after - impossible
Pronoun positionlook it up; *look up itlook after him; *look him after
Stressthe particle is usually stressed: look it UPthe preposition is usually unstressed: LOOK after him
Relative fronting*the word up which she lookedthe child after whom she looked (formal)

The third group combines a particle and a preposition. The tests show both parts at once.

Phrasal-prepositional verbParticle (stays with verb)Preposition (takes the object)What the tests show
put up with the noiseupwithput up with it; *put up it with; *put it up with
look forward to the holidayforwardtolook forward to it; 'to' is a preposition, so it takes a noun or -ing: look forward to seeing you
run out of timeoutofrun out of it; *run it out of
get on with the workonwithget on with it; *get it on with
Meaning is not a test. 'Look after' is as idiomatic as 'look up', and 'turn off the light' is as literal as 'walk up the stairs'. Classify by behaviour - movement, pronoun, stress, fronting - and use meaning only to check that you have not changed the sentence.

Think of a particle as a limb of the verb and a preposition as a hand held out to the noun. A limb moves with the body - you can put the object in front of it or behind it, and it is still the verb's. A hand stays clasped to the noun phrase it is holding, and wherever that phrase goes, the hand goes with it.

Once you can classify, a further split appears inside phrasal verbs. Transitive ones take an object and allow particle movement: 'pick up the box', 'pick the box up'. Intransitive ones take no object at all: 'The plane took off', 'He gave in'. The intransitive particle is exactly the 'preposition without a complement' of S31, now fused into a verb.

Here is a pair that the tests have to untangle, because the surface is identical. 'She ran up the hill.' 'She ran up a bill.' In the first, 'up the hill' is a prepositional phrase of direction: 'up' has the partner 'the hill', and the verb 'ran' has its ordinary meaning. Movement fails: *'She ran the hill up'. Fronting works: 'the hill up which she ran'. In the second, 'ran up' is a phrasal verb meaning 'accumulated', and 'a bill' is its object. Movement works: 'She ran a bill up'. The pronoun goes inside: 'She ran it up'. Fronting fails: *'the bill up which she ran'. Now the hard part. Some verbs sit between. 'She got over the illness' (recovered) behaves like a prepositional verb - 'got over it', *'got it over' in this sense - even though the meaning is idiomatic. 'Get over' in 'get the meeting over' is a different, phrasal use with a different meaning. The same letters, two grammars, two meanings. The honest analysis tests each use separately and does not assume that a verb and a small word have one classification everywhere they appear together.

One word, one sentence frame, and the pronoun test flips the meaning: 'Turn on the lights.' - 'Turn them on.' 'The dog turned on the stranger.' - 'The dog turned on him.' In the first, 'on' is a particle: 'turn on' means 'switch on', and the pronoun goes inside. In the second, 'on' is a preposition: 'turn on' means 'attack suddenly', and the pronoun stays after it. Try forcing the wrong pattern. 'The dog turned him on' cannot carry the attack meaning at all: once the pronoun sits inside, a listener hears the particle reading, as if the dog had switched him on like a machine. Same verb, same small word, and the position of a pronoun is what tells the listener which of two very different events happened.

Terminology varies. Many textbooks call all multi-word verbs 'phrasal verbs'; the three-way split used here (phrasal, prepositional, phrasal-prepositional) follows the tradition of Quirk et al. (1985). CGEL (2002) analyses particles as prepositions without a complement, consistent with S31. The tests are the same under both. The stress test is a tendency, not a rule, and varies with emphasis. Rely on movement and pronoun position first.

  1. Run the Preposition Test: can the small word stay with the verb when its noun phrase moves?
  2. Swap in a pronoun: 'look it up' means phrasal; 'look after it' means prepositional.
  3. Try moving a full noun object past the small word.
  4. Try fronting the preposition in a formal relative clause.
  5. After 'look forward to', 'object to' and 'be used to', use a noun or an -ing form.
  6. Test each use separately; one verb and small word can be both kinds in different meanings.
  7. Trust movement and pronoun position over stress, and never classify by meaning alone.
You can now tell phrasal and prepositional verbs apart by what they do, not by what they mean. In a phrasal verb, the small word is a particle that belongs to the verb. The object can go either side of it ('look up the word', 'look the word up'), and a pronoun must go inside ('look it up'). In a prepositional verb, the small word is a preposition that belongs to the noun phrase after it. It cannot be separated ('look after him', never 'look him after'), and it can be fronted in a formal relative clause ('the child after whom she looked'). Phrasal-prepositional verbs combine both: 'put up with', 'look forward to', 'run out of'. Their final 'to' is a preposition, so it takes -ing: 'look forward to seeing you'. Stress tends to fall on particles, not prepositions. And identical pairs such as 'run up the hill' and 'run up a bill' are separated only by the tests.

Prepositions under exam conditions

The Preposition Test anchors every item: find the preposition, find its partner, and ask whether this word, with this partner, names the relation the sentence needs. Then run the five checks in order.

CheckWhat to look forErrorStandard form
1 dependentfixed word + preposition pairsconsist from, capable to, comply toconsist of, capable of, comply with
2 redundanta verb that takes a direct objectdiscuss about, reach to, enter into the roomdiscuss it, reach it, enter the room
3 since / forstarting point or duration?since three hoursfor three hours / since noon
4 in / on / atpoint, surface or container; no preposition before this, next, last, every, tomorrowon next Monday, in the night of the partynext Monday, on the night of the party
5 between / amongseparate relations or an undivided group?among the two sisters (for a split)between the two sisters; between three countries is also standard

Just as important as finding errors is not inventing them. These forms look suspicious to over-trained eyes and are standard.

FormWhy it is not an error
What are you looking at?Stranded prepositions are standard English (S34).
on the weekend / at the weekendAmerican and British standard forms (S36).
different from / than / toAll used in standard varieties; 'from' is accepted everywhere.
a treaty between three countries'Between' is standard for separate relations with any number.
enter into an agreement / a discussion'Enter into' is a fixed combination for joining an arrangement; only physical entering drops 'into'.
bored of / bored withBoth in wide standard use; 'bored with' is the older and more formal form.
A well-built item has one clear error or one clearly best option. If you find yourself 'correcting' a stranded preposition or a British/American alternative, stop: the error is almost certainly somewhere else in the sentence.

Picture a customs officer with a checklist of five questions, asked in the same order of every passenger. The officer does not rely on a feeling that someone looks suspicious; the list catches what the eye misses. And the officer also knows which items are on the allowed list, so that nobody is stopped for carrying something legal.

Once the five checks are routine, you can speed them up by scanning for triggers. Verbs like discuss, reach, enter, marry and approach trigger the redundancy check. Time words like since, for, next and last trigger checks 3 and 4. Adjectives and nouns that end a phrase - good, capable, interest, reason - trigger the dependent check. Scanning for triggers lets you run five checks in the time it takes to read the sentence once.

Here is the item type where a good student can still lose the mark honestly. 'The report was comprised of three sections.' Is that an error? Traditional usage says 'comprise' means 'consist of' - 'the report comprises three sections' - so 'comprised of' is redundant, like 'consist of of'. Many usage guides still flag it, and a conservative examiner may expect it corrected. But 'comprised of' is now extremely common in edited writing, and several dictionaries record it as standard, sometimes with a usage note. A modern examiner might accept it, and an item that keyed it wrong could be challenged. So what should you do? In an item that asks for the most formal or most traditional version, choose 'comprises' or 'consists of', which no one objects to. In an item where 'comprised of' is not the only candidate, look for a clearer error elsewhere first: a well-built item rarely hinges on a disputed usage. And in your own writing, use 'consists of' or 'is made up of', and the question never arises. The Master position is to know that the dispute exists, to choose the form that is safe for every reader, and never to claim that the disputed form is simply wrong.

One preposition can make a correct-looking sentence say the opposite of what the writer meant: 'The manager agreed to the proposal.' 'The manager agreed with the proposal.' The first means she accepted it - it will now happen. The second means she thinks it is right - but she may not have the power to approve it, or may still turn it down for other reasons. Now add a person: 'The manager agreed with Ravi.' That is standard. 'The manager agreed to Ravi' is not - you agree to a plan and with a person. An exam item built on this pair looks like a dependent-preposition question, but it is really a meaning question. Checking the relation the preposition names, not just whether the pair exists, is what gets it right.

Item types are described generally. Board papers, SAT-style standard-English questions and IELTS-style writing criteria differ in format and in what they reward; no specific paper, year or mark scheme is cited. IELTS-style writing is marked partly on grammatical accuracy, not through preposition multiple-choice items. Disputed forms - comprised of, bored of, different than - are described with both positions and never keyed wrong in this section unless the stem names a formal or traditional register.

  1. Run the Preposition Test on each preposition, then the five checks in order.
  2. Scan for trigger words: discuss, reach, enter; since, for, next; good, capable, reason.
  3. Check for missing prepositions as well as extra ones.
  4. Check the meaning before applying a rule - enter / enter into, agree to / agree with.
  5. Never 'correct' a stranded preposition or a BrE/AmE alternative.
  6. For disputed forms, choose the version no reader objects to, and look for a clearer error first.
  7. Use the last five minutes to run the same checks on your own written answers.
You can now check any sentence for preposition errors in a fixed order. Five categories cover most exam items. Dependent prepositions: consist of, capable of, comply with, good at. Redundant prepositions: discuss, reach and enter a room take a direct object. Since and for: since a starting point, for a duration. In, on and at: point, surface and container, with no preposition before this, next, last, every or tomorrow. Between and among: between for separate relations, with any number. Check for missing prepositions too - explain it to me, wait for the bus. Then protect what is standard: stranded prepositions, British and American alternatives, 'between' with three, 'enter into an agreement'. And where usage is genuinely disputed, as with 'comprised of', choose the form no reader objects to and look for a clearer error elsewhere.

Close reading a preposition

Close reading begins with the Preposition Test, done slowly: find the preposition, find its partner, and name the relation exactly. Then ask what the choice adds that another preposition would not.

PhraseRelation namedWhat it contributesWhat another word would lose
government of the peopleorigin and belongingpower comes from the people and is theirs'over the people' would reverse it: power above them
government by the peopleagentthe people do the governingwithout it, a king could govern 'for' them
government for the peoplebeneficiarygovernment serves their interestwithout it, a people could govern for a narrow class

Prepositions of place and direction do a different kind of work in narration: they decide where the reader stands. Here is a short passage written for this section.

Mira stood at the window. Beyond the glass, the street ran down to the river, and across the river the lights of the mill came on one by one. Somewhere below her, a door closed. She stepped back from the window, into the dark of the room.
PrepositionFraming effect
at the windowa fixed point: the reader is placed where Mira is
beyond, down to, acrossthe view moves outward along a path, further and further from her
below herthe sound comes from a place she cannot see - the frame stays on her position
back from, intomotion reverses: from the open view into an enclosed container - withdrawal

The passage never says that Mira feels cut off. The prepositions carry the view out to the far bank and then pull her back into the dark, and the reader feels the withdrawal before any word names it.

Think of a camera on a film set. The noun is what the camera points at; the preposition is where the camera stands and which way it moves. 'At the window' plants the tripod. 'Beyond the glass' pushes the lens outward. 'Into the dark' pulls the camera back from the window into the room. A close reader watches the camera, not just the scene.

Once you can read a single preposition, patterns come into view. Repetition with variation - of / by / for - builds a definition. Contrast - into / out of - builds a turn. A sequence of path prepositions - beyond, down to, across - builds distance. Reading the pattern, not just the word, is what turns a comment into an argument about how the passage works.

Here is where close reading meets genuine ambiguity. What does 'of' mean in 'government of the people'? Most readers take it as origin and belonging: government that comes from the people and is theirs. The phrases that follow - 'by the people, for the people' - support that reading by completing a democratic picture. But 'of' is one of the most flexible prepositions in English, and 'government of the people' could, in isolation, mean the governing of the people - the people as the ones who are governed, as in 'the government of India' or 'the management of staff'. On that reading, 'of the people' names the object of government, not its source. Which reading did Lincoln intend? We cannot know his mind directly, and the phrase had antecedents: similar three-part formulas had appeared in earlier American speeches and sermons. What we can say is that the sentence works either way - government that governs the people, is carried out by them and serves them is still a democratic definition - and that the ambiguity may be part of its strength. The Master answer names both readings of 'of', says which the context favours and why, and does not claim more certainty than the text gives.

Change one preposition in a famous shape and watch the politics change: 'government of the people, by the people, for the people' 'government over the people, by the few, for the few' The second is a description of oligarchy - rule by a small group in its own interest - and it was made by swapping one preposition and two nouns. Now try keeping the nouns and moving only the prepositions: 'government for the people, of the people, by the people'. The same three ideas, but the order now leads with benefit, not origin, and ends with agency - a different emphasis, closer to a promise than a principle. Three small words, and their order is an argument about what democracy is for.

The Gettysburg Address (1863) is in the public domain, and its final phrase is quoted here in its standard form; minor wording and punctuation vary between the surviving copies in Lincoln's hand. The Mira passage and every other passage in this section are written for teaching. The 'object of government' reading of 'of' is offered as a grammatical possibility, not a claim about Lincoln's intention.

  1. Run the Preposition Test slowly: preposition, partner, exact relation.
  2. Name the preposition and the relation in every comment, not just the passage's theme.
  3. Use the substitution test: replace the preposition and say what is lost.
  4. Look for patterns - repetition, contrast, a movement that reverses.
  5. Track where the reader stands in narration: point, path, container.
  6. Argue from the text; do not over-read a preposition that is simply natural.
  7. Where a preposition allows two readings, name both and say which the context favours.
You can now read a single preposition closely and say what it is doing. A close reading picks one word, names the relation it expresses, and asks what would change if it were different. Prepositions reward this because they are small enough to pass unnoticed and precise enough to carry an argument. Lincoln's 'government of the people, by the people, for the people' keeps the noun fixed and changes only the preposition: of for origin and belonging, by for agent, for for beneficiary. Together they define democracy; remove one and the definition is incomplete. In narration, prepositions of place and direction decide where the reader stands: 'at the window', 'beyond the glass', 'into the dark'. A pattern that moves out and then back can show a character withdrawing before any word says so. Name the preposition, name the relation, test a substitute - and do not over-read.

Independent performance

Every decision still begins with the Preposition Test: find the preposition, find its partner, name the relation. The Master tools then answer one question each.

In the draftToolDecision
discussed about the problemS36 / S38 redundancyfix - 'discussed the problem'
the problem of the lack of the funding of the libraryS35 chain of 'of'rewrite - 'how little funding the library has'
on last MondayS38 in / on / atfix - 'last Monday'
Different to what the report saidS36 varietychoose - 'Contrary to the report' is clearest for every reader
since three monthsS38 since / forfix - 'for three months', or simply 'waited three months'
a decision which they can depend onS34 strandingkeep - standard; 'on which they can depend' if formal
who we spoke toS34 strandingkeep - right for a newsletter
by Fridaydeadlinekeep - 'until Friday' would mean something else
look forward to see itS37 prepositional 'to'fix - 'look forward to seeing it'

One possible rewrite, for a school newsletter read by students, parents and teachers:

Last Monday, the student council discussed how little funding the library has. Contrary to the report, members have waited three months for a decision they can depend on. The principal, who we spoke to, said the plan would be ready by Friday, and we look forward to seeing it.

And a commentary that defends it:

DecisionReason
cut 'about' after 'discussed''Discuss' takes its topic directly in standard written English.
chain of 'of' to 'how little funding the library has'A clause with a verb replaces three 'of' links and puts the point first.
'on last Monday' to 'Last Monday', frontedNo preposition before 'last'; fronting sets the time before the event.
'Different to' to 'Contrary to'The meaning was contradiction, not difference; 'contrary to' says so for every variety.
'since three months' to 'three months'A duration takes 'for'; with 'waited', even 'for' can go, which avoids 'for ... for'.
kept 'depend on' and 'who we spoke to' strandedBoth are standard and suit a newsletter; pied-piping would sound stiff here.
kept 'by Friday''By' sets a deadline; 'until' would describe a state lasting up to Friday.
'to see' to 'to seeing''To' in 'look forward to' is a preposition and takes -ing.

This is one defensible version, not the answer. A writer for a formal report might pied-pipe 'on which they can depend' and use 'whom', and defend that just as well.

Picture an editor with three trays on the desk: fix, keep, and choose. Every preposition in the paragraph goes into one tray, and none goes in without a reason written on a slip. The fix tray holds rule errors. The keep tray holds forms that already work, however unfamiliar. The choose tray holds decisions that depend on who will read the page.

Once the three trays are clear, the order of work follows. First, fix rule errors, because they are wrong for every reader. Second, rewrite for clarity, because a clear sentence is easier to judge. Third, make audience choices, because they depend on the final shape. Working in that order stops you polishing a sentence you are about to rebuild.

What does a successful rewrite actually prove? It proves that on this paragraph, with time to think and a table of tools, you could see every preposition, judge it and explain yourself. That is real evidence, and worth having. It does not prove that you will make the same choices in a first draft, under exam pressure, or in a genre you have not practised. Skills learned in one setting transfer imperfectly, and the only honest evidence of reliability is repeated performance in writing nobody set you. There is also a question the chapter cannot answer for you. Several decisions here - 'who' or 'whom', stranding or pied-piping, 'different from' or 'contrary to', whether to keep a regional form in your own writing - depend on audience and on your voice. The chapter gives you the tools to make those choices and defend them. It does not make them for you, and it would be dishonest to pretend a single right paragraph is waiting at the end. What you can claim is narrower and stronger: you now know what each preposition is doing, and you can say why you chose it.

Here is the smallest edit in the paragraph with the largest effect: 'The plan would be ready by Friday.' 'The plan would be ready until Friday.' The first sets a deadline: at some point no later than Friday, the plan will be ready. The second is strange - it seems to say the plan will be ready for a period that ends on Friday, and then presumably stop being ready. A writer hunting for errors might have 'improved' the first into the second, because both are time prepositions and 'until' feels more formal. That is why the keep tray matters. The strongest editorial decision in the whole paragraph may be the one that changes nothing - and can say why.

The newsletter paragraph and its rewrite are written for teaching. The rewrite is one defensible version for a named audience, not a model answer; other versions that fix the same rule errors and defend their audience choices are equally strong. This section introduces no new rules. Every decision cites an earlier Master section, and disputed forms ('different to', 'who' or 'whom') are framed as audience choices, not errors.

  1. Name the reader before changing anything.
  2. Run the Preposition Test on every preposition in the paragraph.
  3. Sort each into fix, keep or choose - with a reason for each.
  4. Fix rule errors first, then rewrite for clarity, then make audience choices.
  5. Keep standard forms, including stranded prepositions and 'by' for deadlines.
  6. Defend each decision in one sentence that names the relation, the rule or the register.
  7. Reread the finished paragraph as its reader would, and undo any change that made it stiffer.
You can now analyse, rewrite and defend every preposition in a paragraph on your own. The method has three steps. Analyse: run the Preposition Test on every preposition and name its relation. Rewrite: fix rule errors first - discussed about, on last Monday, since three months, look forward to see - then unpack chains of 'of' for clarity, then make audience choices such as 'different to' or pied-piping. Defend: one sentence per decision, citing the relation, the rule or the register. The hardest part is the keep tray. Stranded prepositions, 'by Friday' and 'who we spoke to' were already right, and changing them would have made the paragraph worse. A good rewrite proves skill on this paragraph, not yet reliability everywhere. That comes from doing the same in writing nobody set you. You can explain what a preposition is doing, and defend your choice.

Common questions about prepositions

What is a preposition?
A preposition is a word that links a noun phrase to the rest of the sentence and names the relation: place (under the bed), time (since Monday), direction (into the box), tool (with a spoon) or topic. Place is its core meaning, not its only one. Test it: remove the noun phrase after it; if the sentence breaks, it is a preposition.
When do I use in, on and at for time?
Use in for longer stretches (in June, in 2015, in the morning), on for single days and dates (on Monday, on 4 July, on Monday morning), and at for clock times and points (at six, at noon, at night). Next, last, this and every take none: next week. At the weekend is British; on the weekend is American. Both are standard.
When do I use in, on and at for place?
Use in for a container or area (in the kitchen, in Delhi), on for a surface (on the table) and at for a point where you meet, stop or do an activity (at the gate, at school). It is on the bus and on the train but in the car. In hospital (British) and in the hospital (American) are both standard.
What is the difference between since and for?
Since takes a starting point; for takes a length of time. I have lived here since 2020; I have lived here for five years. 'Since two years' is a common Indian English pattern, but the standard written form is for two years. Both usually go with the present perfect: I have been here since Monday, not I am here since Monday.
Can you end a sentence with a preposition?
Yes. Ending a sentence with a preposition is normal, standard English: What are you looking at? The ban came from seventeenth- and eighteenth-century critics, and the major grammars of English treat stranding as fully standard. The formal alternative, With whom did you go?, is also correct. Only the doubled version, the house in which I live in, is wrong.
What is the difference between between and among?
Use between for separate items you can name, linked one by one, whatever the number: between her two cousins, a treaty between three countries. Use among for a group seen as one mass: among the crowd, among friends. The rule that between is only for two is a myth; between three is standard. The fixed phrase is between you and me.
What is the difference between in and into?
In usually tells where something is; into tells movement from outside to inside: the cat is in the box; the cat jumped into the box. After verbs like put, jump, fall and throw, in is also normal: jump in the pool, put it in the bag. Into makes the journey clearer. For something just sitting there, use in, never into.
What is the difference between by and until?
By sets a deadline: no later than that point. Until means something continues right up to that point and then stops. Hand in the form by Friday. The library is open until six. Hand in the form until Friday sounds as if you keep handing it in all week. Not until means not before: I won't know until Friday.
Is "discuss about" correct?
The standard form is discuss without about: we discussed the plan. Discuss about is a common pattern, especially in Indian English, borrowed from talk about and a discussion about, but exams expect discuss the plan. The noun keeps its partner: a discussion about the plan. Enter, reach, marry and lack work the same way: enter the room, reach Chennai.
What are dependent prepositions, like good at and interested in?
They are fixed pairs to learn as chunks, not rules you can work out: good at, afraid of, proud of, interested in, keen on, responsible for, worried about, kind to, married to. Verbs and nouns have them too: depend on, listen to, a reason for. Learn the word and its partner together, and check a learner's dictionary.
Are before and after prepositions or conjunctions?
Both, in traditional grammar: what follows decides. Before, after, since and until are prepositions before a noun phrase or -ing form (after lunch, after eating) and conjunctions before a clause with its own subject and verb (after we ate). The same test explains despite and although: despite the rain, although it rained. Despite it rained is wrong.
What is the difference between a phrasal verb and a preposition?
In a phrasal verb the small word is a particle that belongs to the verb and can move: look up the word, look the word up. A preposition is glued to its noun phrase: run up the hill, never run the hill up. With a pronoun, a particle goes after it (turn it off); a preposition stays in front (look after him).
Do prepositions only show place?
No. Place is where most prepositions began, but they name many relations: time (on Monday), direction (into the room), company (with a friend), tool (with a spoon), cause (because of the rain), topic (a book about birds) and possession (the roof of the house). A preposition is defined by its job, linking a noun phrase to the sentence, not by meaning position.
Is it by bus or by the bus?
By bus. When by tells how you travel, English uses the bare noun with no the or a: by bus, by train, by car, by boat. If you want the, switch preposition: on the bus, in the car. Walking is on foot in careful English, though by foot is sometimes heard.
What is a prepositional phrase?
A prepositional phrase is a preposition plus its partner, the noun phrase after it: under the bed, after lunch, with my sister. The phrase runs from the preposition to the end of the partner, so under the big old bed is one phrase of five words. It can answer a question on its own and can often move: After lunch, we play.

Keep exploring

▶ Practise prepositions in the interactive lesson
Other guides: NounsVerbsAdjectivesPronounsArticles & DeterminersAdverbsSentence StructurePhrasesClauses & ConjunctionsSentence TypesSubject-Verb AgreementTense ConsistencyPronoun AgreementParallel StructureCommas & SemicolonsApostrophes & QuotesCapitalizationHyphens & DashesConcisenessTransitions & FlowTone & RegisterError SpottingSentence RhythmPunctuation & Editing for EffectFigures of SpeechParagraph ArchitectureVoice & StyleArgument & PersuasionPutting It All Together · All 30 chapters
Copyright © Pawan Nayar · LLOS.ai · 2026 — Original pedagogy, voice, and design — all rights reserved. This is the readable guide; the interactive lesson lives at prepositions.html.