tìm ra câu bị động 21. Do they teach English here? a. Is English taught here? b. English is teach here? c. Is English teach here? d. English taught here? 22. Did the teacher give some exercises? a. Were some exercises given by the teacher? b. Were some exercises given to the teacher? c. Were the teacher given some exercises? d. A & B are correct. 23. People believe that red is the symbol of luck. a. Red believes people to be the symbol of luck. b. Red believed to be the symbol of luck. c. Red is believed to be the symbol of luck. d. B & C are correct. 24. They may use this room for the classroom. a. This room may use for the classroom. b. The classroom may be used for this room. c. They may be used for the classroom. d. This room may be used for the classroom. 25. The teacher is going to tell a story. a. A story is going to be told by the teacher. b. A story is going to tell by the teacher. c. A story be told by the teacher. d. A story is going to tell the teacher.

21. Do they teach English here?
a. Is English taught here? 
b. English is teach here? 
c. Is English teach here? 
d. English taught here? 
22. Did the teacher give some exercises?
a. Were some exercises given by the teacher? 
b. Were some exercises given to the teacher? 
c. Were the teacher given some exercises? 
d. A & B are correct. 
23. People believe that red is the symbol of luck.
a. Red believes people to be the symbol of luck. 
b. Red believed to be the symbol of luck. 
c. Red is believed to be the symbol of luck. 
d. B & C are correct. 
24. They may use this room for the classroom.
a. This room may use for the classroom. 
b. The classroom may be used for this room. 
c. They may be used for the classroom. 
d. This room may be used for the classroom. 
25. The teacher is going to tell a story.
a. A story is going to be told by the teacher. 
b. A story is going to tell by the teacher. 
c. A story be told by the teacher. 
d. A story is going to tell the teacher.

Công thức chuyển:

- Đối vs thì HTĐ (Câu 21,23)): Chủ động: S + V(s/es) + O

                             Bị động: O + am/is/are + P2

- Đối vs thì TL gần ( Câu 25): Chủ động: S + am/is/are going to + V + O

                                 Bị động: O + am/is/are going to + be + P2

- Đối vs QKĐ (Câu 22): Chủ động : S + V(ed/Ps) + O

                       Bị động: O + was/were + P2

- Đối vs động từ khuyết thiếu ( Câu 24) : Chủ động: S + ĐTKT + V + O

                                                    Bị động: O + ĐTKT + be + P2