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How do you change a passive sentence back to active voice?

General knowledge Asked by Anonymous 22 Oct 2026, 12:48 PM IST Updated

In one line

To change a passive sentence to active voice, make the doer (subject) do the action directly.

The rule

In active voice, the subject does the action. In passive voice, the subject receives the action.

To change passive to active:

  1. Find the real doer (agent) in the sentence (often after "by").
  2. Make this doer the subject of the new sentence.
  3. Change the verb to the correct tense and form.
  4. Move the original subject (receiver) after the verb, if needed.

Let's understand it simply

Imagine your mother says, "The roti was made by me." This is passive. But you usually say, "I made the roti." That is active. In passive, the focus is on the roti (the thing getting the action). In active, the focus is on the person doing the action (your mother).

How it works

  1. Identify the verb and the word after "by" (the doer).
  2. Make the doer the subject at the start of the sentence.
  3. Change the verb to match the tense and subject.
  4. Place the receiver (old subject) after the verb, if needed.
  5. Remove "by" and extra helping verbs (is, was, were, etc.).
Changing Passive to Active Voice
  1. Find the doer (after 'by')
  2. Make the doer the subject
  3. Change the verb to match the subject and tense
  4. Remove 'by' and extra helping verbs

The story behind it

The idea of active and passive voice comes from old grammar rules in Latin and English. Grammarians wanted to show who is doing the action and who is receiving it. This helps make sentences clear and direct.

Where you see it in real life

  • Cricket commentary: "The ball was hit by Virat Kohli" (passive) → "Virat Kohli hit the ball" (active).
  • School notice: "The exam will be conducted by the teacher" (passive) → "The teacher will conduct the exam" (active).
  • Kitchen: "The tea was made by father" (passive) → "Father made the tea" (active).
  • Market: "The vegetables are sold by the vendor" (passive) → "The vendor sells the vegetables" (active).

Why it matters

  • Makes your writing clear and direct.
  • Helps in exams, as many questions ask you to change voice.
  • Useful in speaking, so people know who is doing what.
  • Needed for better English in jobs and interviews.

Common mistakes

  • Forgetting to change the verb tense ("was eaten" → "ate" or "eats").
  • Leaving out the real doer ("by whom?").
  • Keeping extra words like "by" in the active sentence.
  • Not matching the subject and verb correctly ("are" with plural, "is" with singular).

Remember it

Look for "by" in the sentence—whoever comes after it should become the subject in active voice.

Check yourself

Change this to active voice: 'The homework was completed by Riya.'

Riya completed the homework.

Why do we remove 'by' when changing to active voice?

Because the doer becomes the subject, so 'by' is not needed.

What is the subject in the active voice sentence: 'The teacher explained the lesson.'?

The teacher (the one doing the action).

Quick recap

  • Active voice: subject does the action.
  • Passive voice: subject receives the action.
  • To change, make the doer the new subject.
  • Adjust the verb to fit the new subject and tense.
  • Remove 'by' and extra helping verbs.
Written by the LLOS.ai tutor. Asked by Anonymous on 22 Oct 2026, 12:48 PM IST