Question

Then I made a mistake ( change the voice)

Answer 1

Answer :-

Then a mistake was made by me.

Explanation :-

Given sentence is in past indefinite tense (or simple past tense). Here, the object is "a mistake"  and the subject is I. While changing to passive :-

1. The subject of active becomes the object of passive, and the object of passive becomes the subject of active.
2. The verb is always in its third form in passive voice.
3. For simple past passive, was/were is used before the verb.
4. By is used to join the verb and the doer of the action (the subject)
5. I changes to me in passive voice.

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Answer 2

The answer is as follows:

Then a mistake was made by me.

• This sentence belongs to the chapter on Active and Passive Voice. The sentence is given in the Active voice.

• In the Active voice, the subject is said to act. In the passive voice, the outcome is referred to be the action of the subject.

• In the passive voice, the subject turns into the predicate and is joined by the word 'by.'