Change active into passive
My uncle writes books
I am drinking tea now
Mary bought a new hat yesterday
By 6 o’clock she had make a cake
We are writing an exercise now
When I came home, my mother was cooking supper
Before they went to school, they had drunk milk
She has already done her homework
We were playing computer games the whole evening yesterday
They had not read this book yet

1. My uncle writes books.
Active: My uncle writes books.
Passive: Books are written by my uncle.

Explanation: In the active voice, the subject "my uncle" performs the action of writing books. In the passive voice, the subject becomes the receiver of the action, so "books" become the subject, and "are written" indicates the action being done by someone else.

2. I am drinking tea now.
Active: I am drinking tea now.
Passive: Tea is being drunk by me now.

Explanation: In the active voice, the subject "I" is performing the action of drinking tea. In the passive voice, the subject becomes the receiver of the action, so "tea" becomes the subject, and "is being drunk" indicates the action being done by someone else.

3. Mary bought a new hat yesterday.
Active: Mary bought a new hat yesterday.
Passive: A new hat was bought by Mary yesterday.

Explanation: In the active voice, the subject "Mary" performs the action of buying a new hat. In the passive voice, the subject becomes the receiver of the action, so "a new hat" becomes the subject, and "was bought" indicates the action being done by someone else.

4. By 6 o’clock she had made a cake.
Active: By 6 o’clock she had made a cake.
Passive: A cake had been made by her by 6 o’clock.

Explanation: In the active voice, the subject "she" performs the action of making a cake. In the passive voice, the subject becomes the receiver of the action, so "a cake" becomes the subject, and "had been made" indicates the action being done by someone else. "By 6 o’clock" is added at the end to indicate the time frame.

5. We are writing an exercise now.
Active: We are writing an exercise now.
Passive: An exercise is being written by us now.

Explanation: In the active voice, the subject "we" performs the action of writing an exercise. In the passive voice, the subject becomes the receiver of the action, so "an exercise" becomes the subject, and "is being written" indicates the action being done by someone else.

6. When I came home, my mother was cooking supper.
Active: When I came home, my mother was cooking supper.
Passive: When I came home, supper was being cooked by my mother.

Explanation: In the active voice, the subject "my mother" performs the action of cooking supper. In the passive voice, the subject becomes the receiver of the action, so "supper" becomes the subject, and "was being cooked" indicates the action being done by someone else. The phrase "when I came home" remains the same.

7. Before they went to school, they had drunk milk.
Active: Before they went to school, they had drunk milk.
Passive: Before they went to school, milk had been drunk by them.

Explanation: In the active voice, the subject "they" performs the action of drinking milk. In the passive voice, the subject becomes the receiver of the action, so "milk" becomes the subject, and "had been drunk" indicates the action being done by someone else. The phrase "before they went to school" remains the same.

8. She has already done her homework.
Active: She has already done her homework.
Passive: Her homework has already been done by her.

Explanation: In the active voice, the subject "she" performs the action of doing her homework. In the passive voice, the subject becomes the receiver of the action, so "her homework" becomes the subject, and "has already been done" indicates the action being done by someone else.

9. We were playing computer games the whole evening yesterday.
Active: We were playing computer games the whole evening yesterday.
Passive: Computer games were being played by us the whole evening yesterday.

Explanation: In the active voice, the subject "we" performs the action of playing computer games. In the passive voice, the subject becomes the receiver of the action, so "computer games" becomes the subject, and "were being played" indicates the action being done by someone else. The phrase "the whole evening yesterday" remains the same.

10. They had not read this book yet.
Active: They had not read this book yet.
Passive: This book had not been read by them yet.

Explanation: In the active voice, the subject "they" does not perform the action of reading this book. In the passive voice, the subject becomes the receiver of the action, so "this book" becomes the subject, and "had not been read" indicates the action not being done by them yet. The word "yet" remains at the end to indicate the time frame.