Sentences in active voice (active voice) in present simple tense (present simple tense) in English have the following structure:
Subject + first form of the verb + object
The structure of sentences in passive voice (passive voice) in present simple tense (present simple tense) in English is as follows:
Object of the active sentence + is/am/are + past participle form of the verb + by + subject of the active sentence
Transformation of a declarative sentence into passive voice (passive voice):
- Active: I write a letter.
- Passive: A letter is written by me.
- Active: I help you.
- Passive: You are helped by me.
- Active: I love my parents.
- Passive: My parents are loved by me.

- Active: We love our country.
- Passive: Our country is loved by us.
Transformation of a negative sentence into passive voice (passive voice):
- Active: I do not write a letter.
- Passive: A letter is not written by me.
- Active: I do not abuse my servants.
- Passive: My servants are not abused by me.
- Active: I do not write novels.
- Passive: Novels are not written by me.
- Active: He does not tease her.
- Passive: She is not teased by him.
Transformation of a question into passive voice (passive voice):
Structure: Is/are/am + object of the active verb + past participle form of the verb + by + subject of the passive verb
- Active: Do you write a letter?
- Passive: Is a letter written by you?

- Active: Do you write stories?
- Passive: Are stories written by you?
- Active: Does she make candles?
- Passive: Are candles made by her?
- Active: Who does not obey you?
- Passive: By whom are you not obeyed?
- Active: Which newspaper do you read?
- Passive: Which newspaper is read by you?
- Active: Does she do her duty?
- Passive: Is her duty done by her?
The object of the verb in active voice becomes the subject of the verb in passive voice (passive voice). Consequently, sentences that do not have an object cannot be transformed into passive voice. For example, the following sentences:
- The old man sat in a corner
- The child sleeps.
- The wind blows.
- The dog barks.
- The fire burns.
- He laughed aloud.
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