1. Hoa's homework was done by her last night

2. They was invited to Ha's party by her last night

3. Their parents are visited twice a week

4. Mr Tan's house was built 5 years ago

5. Tennis can be played by me

6. Trees are planted by him in the garden

7. Letter is writen to the girl's parents by her once a week

8. The door is opened by them

9. A new bike is gived to me by my mother

Cấu trúc câu bị động:

Thì HTĐ: `text{S+am/is/are+V3/Ved (+by O)+...}`

Thì QKĐ: `text{S+was/were+V3/Ved (+by O)+...}`

$\text{1. Her homework was done by Hoa last night.}$

- Bị động quá khứ đơn: S+ was/were+Vpp/ed+(by+O)

$\text{2. They were invited to the party by Ha last night.}$

- Bị động quá khứ đơn: S+ was/were+Vpp/ed+(by+O)

$\text{3. Their parents are visited twice a week.}$

- Bị động hiện tại đơn: S+ am/is/are+Vpp/ed+(by+O)

$\text{4. His house was built by Mr Tan 5 years ago.}$

- Bị động quá khứ đơn: S+ was/were+Vpp/ed+(by+O)

$\text{5. Tennis can be played.}$

- Bị động với Modal Verbs: S+ can/ could/ would/...+ be+ Vpp/ed+ (by+O)

$\text{6. Trees are planted by him in the garden.}$

- Bị động hiện tại đơn: S+ am/is/are+ Vpp/ed+ (by+O)

$\text{7. Letter is written to her parents by the girl once a week.}$

- Bị động hiện tại đơn: S+ am/is/are+ Vpp/ed+ (by+O)

$\text{8. The door is opened.}$

- Bị động hiện tại đơn: S+ am/is/are+ Vpp/ed+ (by+O)

$\text{9. I am given a new bike by my mother. }$

- Bị động hiện tại đơn: S+ am/is/are+ Vpp/ed+ (by+O)