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Passive Voice: Put the Thing First

In an active sentence the doer comes first: Raju writes a letter. In a passive sentence the thing that receives the action comes first: A letter is written by Raju. Build it as thing + be + past participle (+ by + doer). Use is/are for the present and was/were for the past. Use the passive when the doer is unknown or not important, and for inventions and processes.

🎬 Step-by-step story

  1. Here is an active sentence: Raju writes a letter. Blue is the doer, green is the action, orange is the thing. The doer comes first.
  2. Now we start the passive sentence. The orange thing jumps to the front. The sentence is about the letter now.
  3. Add the helper word be: is, are, was or were. It matches the thing: a letter is, windows are.
  4. Change the green action word to V3, the past participle. Writes becomes written. Wrote becomes written too.
  5. Add the purple word by, then the doer: A letter is written by Raju. The by-part is optional. Leave it out if we do not need the doer.
  6. Free play: pick a sentence and Present or Past. Watch each block arrive in the same order every time.

Tip: drag the 3D scene to turn it. Use two fingers to zoom.

🤔 Common doubts, cleared

Why does the sentence start with the thing and not the doer?

Because we want to talk about the thing. The thing becomes the subject. See how the orange block moves to the front.

How do I know whether to write is, are, was or were?

Look at the thing (one or many) and the time (now or past). One thing now: is. Many things now: are. One thing past: was. Many things past: were. Try the Present and Past buttons.

Why is the verb 'written' and not 'wrote'?

The passive always uses V3, the past participle. The past form (wrote) is only for active past sentences.

Do I always have to write by + doer?

No. Add it only if we need to say who did the action. Many passive sentences do not have it.

Does the tense change in the passive?

The tense stays the same. Only be shows it: is/are for present, was/were for past. The V3 word does not change.

Active and passive voice

A verb has two voices. In the active voice the doer is the subject: Raju writes a letter.

In the passive voice the thing that receives the action is the subject: A letter is written by Raju.

The meaning is the same. Only the focus changes. Ask: do I want to talk about the doer, or about the thing?

Only verbs that take an object can become passive. We can say She opened the door (door is the object). We cannot make a passive of She slept because nothing receives the action.

The form: be + past participle

Every passive verb has two parts: a form of be and the past participle (V3).

For regular verbs V3 is the same as the past form: clean, cleaned, cleaned. For irregular verbs learn the third form: write, wrote, written; make, made, made; speak, spoke, spoken.

Steps to change active to passive:

  1. Find the doer, the action and the thing.
  2. Move the thing to the front.
  3. Write be (matching the thing and the tense).
  4. Write the action as V3.
  5. Add by + doer, if needed.

Present passive and past passive

The tense of the sentence is shown only by be.

TensePatternExample
Presentis / are + V3Tea is grown in Assam. Windows are cleaned daily.
Pastwas / were + V3The fort was built long ago. The letters were sent.

One thing (singular) takes is / was. Many things (plural) take are / were.

Negative: add not after be: The door was not opened. Question: put be first: Was the door opened?

The by-phrase: who did it?

The by-phrase tells who did the action: The song was sung by Asha.

Use it when the doer is new or interesting. Leave it out when:

This is a big reason we use the passive: we can drop the doer completely, and the sentence is still correct.

Inventions and ideas

When we talk about inventions we care about the thing and when it was made, so the passive fits well.

Try it: pick an object in your room (a pen, a bulb, a bicycle). Write two passive sentences: one in the past (was invented / made) and one in the present (is used).

Key formulas and definitions

Worked examples

1. Change to passive: "Farmers grow rice."

Thing = rice. Present, one thing, so is. grow becomes grown. Answer: Rice is grown by farmers.

2. Change to passive: "The students cleaned the windows."

Thing = the windows (many). Past, so were. cleaned is V3. Answer: The windows were cleaned by the students.

3. Make a passive sentence without a doer: "Someone stole my bike."

The doer is unknown, so leave out by. Answer: My bike was stolen.

4. Write a sentence about an invention in the passive.

The light bulb was invented in the nineteenth century. (was + invented, no doer needed.)

Common mistakes

Practice quiz

1. Which sentence is passive?
2. Passive = thing + be + ?
3. Choose the correct one: The letters ___ sent yesterday.
4. Which is correct?
5. When can we leave out the by-phrase?

Practice: answer these yourself

Type or choose your answer, then press Check. Use a hint if you are stuck; the full solution appears after you answer.

Frequently asked questions

What is the passive voice?

It is a way to write a sentence where the thing that receives the action comes first: A letter is written by Raju.

What is the rule to change active to passive?

Put the thing first, then be (is/are/was/were), then V3, then by + doer if needed.

Which verbs can have a passive?

Only verbs that have an object, such as write, build, open, clean. Verbs like sleep or arrive have no passive.

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