Turn into passive voice. 1. The teacher explains the lesson. 2. Mrs Green is cooking the food in the kitchen. 3. The doctor examined the patients. 4. These boys made that noise. 5. People speak English all over the world. 6. He gave him back the money last Sunday. 7. I can’t do these exercises quickly. 8. She had finished the report by noon. 9. The movie has disappointed us very much. 10. They have to pay the bill before the first of the month. 11. They will ask you several questions. 12. The police are holding him for further questioning. 13. Somebody has locked the box and I can’t open it. 14. My parents promised me a bicycle two days ago. 15. They had eaten all the dinner before they finished the conversations.

$1.$ The lesson is explained by the teacher.

- Câu bị động thì hiện tại đơn: S + am/ is/ are + (not) + V (P_II) + (by O).

$2.$ The food is being cooked by Mrs. Green in the kitchen.

- Câu bị động thì hiện tại tiếp diễn: S + am/ is/ are + (not) + being + V (P_II) + (by O).

$3.$ The patients were examined by the doctor.

- Câu bị động thì quá khứ đơn: S + was/ were + V (P_II) + (by O).

$4.$ That noise was made by these boys.

- Câu bị động thì quá khứ đơn: S + was/ were + V (P_II) + (by O).

$5.$ English is spoken all over the world.

- Câu bị động thì hiện tại đơn: S + am/ is/ are + (not) + V (P_II) + (by O).

$6.$ The money was given back to him last Sunday.

- Câu bị động thì quá khứ đơn: S + was/ were + V (P_II) + (by O).

$7.$ These exercises can't be done quickly by me.

- Câu bị động với động từ khuyết thiếu (Can): S + can + (not) + be + V (P_II) + (by O).

$8.$ The report had been finished by noon by her.

- Câu bị động thì quá khứ hoàn thành: S + had + been + V (P_II) + (by O).

$9.$ We have been disappointed by the movie very much.

- Câu bị động thì hiện tại hoàn thành: S + have/ has + been + V (P_II) + (by O).

$10.$ The bill has to be paid before the first of the month by us.

- Câu bị động với động từ khuyết thiếu (Have to): S + have/ has + to + be + V (P_II) + (by O).

$11.$ You will be asked several questions.

- Câu bị động thì tương lai đơn: S + will + be + V (P_II) + (by O).

$12.$ He is being held for further questioning by the police.

- Câu bị động thì hiện tại tiếp diễn: S + am/ is/ are + (not) + being + V (P_II) + (by O).

$13.$ The box has been locked and it can't be opened by me.

- Câu bị động thì hiện tại hoàn thành: S + have/ has + been + V (P_II) + (by O).

$14.$ I was promised a bicycle by my parents two days ago.

- Câu bị động thì quá khứ đơn: S + was/ were + V (P_II) + (by O).

$15.$ All the dinner had been eaten before the conversations were finished.

- Vế trước: Câu bị động thì quá khứ hoàn thành: S + had + been + V (P_II) + (by O).

- Vế sau: Câu bị động thì quá khứ đơn: S + was/ were + V (P_II) + (by O).