chuyển sang câu bị động

1. She used this room.
    
2. Someone stole my bike yesterday.
    
3. He received a letter from his parents.
    
4. I clean the floor every day.

`1`. This room was used.

`2`. My bike was stolen yesterday.

`3`. A letter was received from his parents.

`4`. The floor is cleaned every day.

`-----------`

`@` Cấu trúc bị động Hiện tại đơn:

`-` S + am/is/are + V3/ed + by(O)

`@` Cấu trúc bị động quá khứ đơn:

`-` S + was/were + V3/ed + by(O)

1. This room was used by her

2. My bike was stolen yesterday

3. A letter was received from his parents by him

4. The floor is cleaned every day

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- Bị động HTĐ: S + am/is/are + V3/ed + (by + O)
- Bị động QKĐ: S + was/were + V3/ed + (by + O)