From NCERTAsked by Anonymous from Seattle, United States23 Oct 2026, 3:27 PM ISTUpdated
In one line
Sometimes, using passive voice is wrong if it makes the sentence unclear, confusing, or grammatically incorrect.
The rule
Passive voice is when the subject of the sentence receives the action, often using a form of 'to be' and the past participle of the verb, sometimes with 'by' to show who did it.
Formula: Subject + form of 'to be' + past participle + (by + agent)
Let's understand it simply
Imagine you are playing cricket. If you say, "I hit the ball," everyone knows you did the action. That is active voice. If you say, "The ball was hit by me," the focus is on the ball, not you. That is passive voice. Sometimes, if you use passive voice in the wrong place, people may not know who did the action or the sentence may sound odd.
Active vs Passive Voice
Active Voice
Passive Voice
Focus
Doer (subject)
Receiver (object)
Example
The cat ate the fish.
The fish was eaten by the cat.
When to use
When the doer is important
When the action or receiver is important
How it works
Start with an active sentence: Subject does something to Object.
To make it passive, move the Object to the front.
Add the correct form of 'to be' (is, was, are, etc.).
Use the past participle (V3) of the verb.
Add 'by' and the original Subject (optional).
Check if the sentence makes sense and is clear.
How to Change Active to Passive
Find the object in the active sentence.
Move the object to the subject position.
Add the correct form of 'to be'.
Use the past participle of the verb.
Add 'by' + agent (optional).
The story behind it
The idea of active and passive voice comes from Latin and Greek grammar. English teachers noticed that sometimes, focusing on the action (not the doer) is useful. But, overusing passive voice or using it wrongly can make writing weak or confusing.
Where you see it in real life
News reports: "A new bridge was built in the city." (Who built it? Not clear.)
Science experiments: "The solution was heated." (Focus on the process, not the person.)
School instructions: "Homework must be submitted by Friday." (Who must submit? Students, but not said directly.)
Cricket commentary: "The ball was caught at the boundary." (Who caught it? Not mentioned.)
Why it matters
Using passive voice wrongly can hide important information (like who did the action).
In exams, wrong passive constructions can lose you marks.
Good writing is clear. Overusing passive voice can make your writing dull or confusing.
Some sentences cannot be made passive (verbs without objects).
Common mistakes
Using passive voice when the doer is important ("The cake was eaten." — Who ate it?).
Making the sentence grammatically wrong ("The ball was hit by." — Missing agent).
Trying to make intransitive verbs (verbs that do not take an object) passive ("He slept the bed" → cannot be made passive).
Remember it
Use passive voice only when the doer is not important, not known, or you want to focus on the action.
Check yourself
Why is 'The ball was hit by.' incorrect?
It is missing the agent (who did the action), so the sentence is incomplete.
Can 'He slept the bed' be changed to passive? Why or why not?
No, because 'sleep' does not take an object, so it cannot be made passive.
When is it better to use passive voice?
When the doer is unknown, not important, or you want to focus on the action.
Quick recap
Passive voice is not always wrong, but can be unclear if misused.
Use passive only when the doer is not important or unknown.
Some verbs cannot be made passive.
Wrong passive sentences can be grammatically incorrect.