Exercise 1:

1. was built

last year -> QKĐ

2. were planted

2 months ago -> QKĐ

3. was helped

4. wasn't locked

last night -> QKĐ

5. Was, stolen

yesterday -> QKĐ

Exercise 2:

1. This letter was given by her last night

2. A new dress was bought her by him

3. I wasn't visited last Sunday

4. You weren't seen at the last party

5. Was the car sold last week?

Cấu trúc chung của bị động:

S + be + PP + by O

Cấu trúc chuyển đổi chung giữa câu chủ động và câu bị động c đã ghi trong hình, e tham khảo nha. Riêng chủ ngữ trong câu chủ động là "I, We, They, He, She" thì khi chuyển sang câu bị động có thể bỏ "by O"

Ex 1: 

1. was built

2. were planted

3. was helped

4. wasn't locked

5. Was your bicycle stolen

Ex 2: (Các câu có thể viết bằng nhiều cách c đã viết hết các trường hợp, e có thể sử dụng 1 trong 2 đều đc nha)

1. He was given this letter last night. / This letter was given to him last night

2. She was brought a new dress. / A new dress was brought for her

3. I wasn't visited last Sunday

4. You weren't seen at the last party

5. Was the car sold last week?