CÂU BỊ ĐỘNG NHA!! 1. My students have met their friend at the station. 2.They didnt allow Tom to take these books home. 3. The teacher wont correct exercises tomorrow. 4. How many trees did they cut down ? 5. This well-known library attracts many people. 6. All students attended the meeting. 7. People say that he is intelligent. 8. He cant repair my bike. 9. Mary has operated Tom since 10 oclock. 10. Smith has taught us French for 2 years. 11. They didnt look after the children properly. 12. Nobody swept this street last week. 13. People drink a great deal of tea in England. 14. People speak English all over the world. 15. Tom was writing 2 poems. 16. She often takes her dog for a walk. 17. She didnt introduce me to her mother. 18. Farmers usually milk cows twice a day. 19. He likes people to call him sir. 20. Our teacher used to bid us talk in class.

$\text{Answer:}$

1. Their friend has been met at the station by my students.

2. Tom wasn't allowed to take these books home.

3. The exercises won't be corrected by the teacher tomorrow.

4. How many trees were cut down ?

5. Many people are attracted to this well-known library.

6. The meeting was attended by all students.

7. It is said that he is intelligent.

8. My bike can't be repaired by him.

9. Tom has been operated by Mary since 10 o'clock.

10. French has been taught to us by Smith for 2 years.

11. The children weren't looked after properly.

12. This street wasn't swept last week.

13. A great deal of tea is drunk in England.

14. English is spoken all over the world.

15. 2 poems were being written by Tom.

16. Her dog is often taken for a walk by her.

17. I wasn't introduced to her mother by her.

18. Cows are usually milked twice a day by farmers.

19. He likes to be called sir.

20. We used to be bid to talk in class by our teacher. 

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Câu bị động:
1. HTĐ: S + is/am/are + V3 + by + O

2. HTTD: S + is/am/are + being + V3 + by + O

3. HTHT: S + have/has + been + V3 + by + O

4. QKĐ: S + was/were + V3 + by + O

5. QKTD: S + was/were + being + V3 + by + O

6. QKHT: S + had + been + V3 + by + O

7. TLĐ: S + will + be + V3 + by + O

8. Modal verbs: S + would/could/might/had to + V3 + by + O