1. My father waters this flower every morning.

=> This flower is watered by my father every morning

2. John invited Fiona to his birthday party last night.

=> Fiona was invited to John's birthday party last night

3. Her mother is preparing dinner in the kitchen.

=> The dinner is being prepared in the kitchen by her mother

4. We should clean our teeth twice a day.

=> Our teeth should be cleaned twice a day

5. Our teachers have explained the English grammar.

=> The English grammar has been explained by our teachers

6. Tom will visit his parents next month

=>Tom's parents will be visited (by him)next month.

7. He hides the broken cup in the drawer

=>The broken cup is hidden in the drawer(by him)

8. The manager didn't phone the secretary this morning.

=> The secretary was not phoned by the manager this morning

9. Did Mary buy this beautiful dress?

=> Was this beautiful dress bought by Mary?

10. I won‟t hang these old pictures in the living room.

=> These old pictures will not be hung in the living room.

`1,` This flower is watered by my father every morning.

`=>` Câu bị động thì hiện tại đơn.

`2,` Flona was invited to John's birthday party by him last night.

`=>` Câu bị động thì quá khứ đơn.

`3,` The dinner is being prepared in the kitchen by her mother.

`=>` Câu bị động thì hiện tại tiếp diễn.

`4,` Our teeth should be cleaned twice a day.

`=>` Câu bị động của động từ khuyết thiếu.

`5,` The English grammar has been explained by ourr teachers.

`=>` Câu bị động thì hiện tại hoàn thành.

`6,` The accident was caused in this city by some drunk drivers.

`=>` Câu bị động thì quá khứ đơn.

`7,` Tom's parent will be visited by him next month.

`=>` Câu bị động thì tương lai đơn.

`8,` The secretary wasn't phoned by the manager this morning.

`=>` Câu bị động thì quá khứ đơn (phủ định).

`9,` Was this beautiful dress bought by Mary?

`=>` Câu bị động thì quá khứ đơn (nghi vấn).

`10,` These old pictures won't be hung in the living room by me.

`=>` Câu bị động thì tương lai đơn (phủ định)