6. have just met 

-> có just dùng HTHT

7. had passed 

-> hành động xảy ra trước hành động khác trong quá khứ

8. saw 

-> có last year dùng thì QKĐ

9. has been

-> có since dùng thì HTHT

B2

1. His motorbike is washed by Nam every Sunday

2. A new school in this region will be built by them next year

3. Animals are being used by them to plough the field.

4. The car was being washed by the old man at this time

5. The flowers haven't been watered for a long time.

6. the operation is going to performed by the French doctors

7. the flight had been postponed by them because of the bad weather.

8. the English grammar have been explained by our teachers

9. more and more pollution are being produced by that factory

10. The problem can be understood by a child

Công thức các câu bị động

Hiện tại đơn

S + V(s/es) + O

S + am/is/are + P2

Hiện tại tiếp diễn

S + am/is/are + V-ing + O

S + am/is/are + being + P2

Hiện tại hoàn thành

S + have/has + P2 + O

S + have/has + been + P2

Quá khứ đơn

S + V(ed/Ps) + O

S + was/were + P2

Quá khứ tiếp diễn

S + was/were + V-ing + O

S + was/were + being + P2

Quá khứ hoàn thành

S + had + P2 + O

S + had + been + P2

Tương lai đơn

S + will + V-infi + O

S + will + be + P2

Tương lai hoàn thành

S + will + have + P2 + O

S + will + have + been + P2

Tương lai gần

S + am/is/are going to + V-infi + O

S + am/is/are going to + be + P2

Động từ khuyết thiếu

S + ĐTKT + V-infi + O

S + ĐTKT + be + P2