2.  Ali’s mother was worried by his absence.

S + was/were + P2

3.  Several new schools are being built in our town.

S + am/is/are + being + P2

4.  Great progress has been made in industry, science and medicine.

S + have/has + been + P2

5. A lion was killed by Sam last week.

S + was/were + P2

6.  Your report must be handed in before the end of this month.

S + ĐTKT + be + P2

7.  The job had just been finished when the factory closed.

S + had + been + P2

8.  That box hasn’t been opened for the past hundred years.

S + have/has + been + P2

9. Are these letters going to be mailed soon?

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

10. The report shouldn’t have been finished yesterday.

S + have/has + been + P2

11. Researches on SIDA began to be carried out by scientists two years ago.

S + ĐTKT + be + P2

12. He is said to be the richest man in our town.

13. You can be assured everything will be arranged in time.

S + ĐTKT + be + P2

14. These homeless boys are to be pitied rather than to be despised.

15. Nothing has been moved since you were sent away to be cured.

S + have/has + been + P2

`2` Ali's mother was worried by his absence.

Câu bị động QKĐ: S+ was/ were+ Vp2+ by O.

`3` New schools are being built several in our town.

Câu bị động HTTD: S+ be+ being+ Vp2+ by O.

`4` Great progress in industry, science, and medicine have been made by us.

Câu bị động HTHT: S+ have/ has+ been+ Vp2+ by O.

`5` A lion was killed by Sam last week.

Câu bị động QKĐ: S+ was/ were+ Vp2+ by O.

`6` Your report must be handed in before the end of this month.

Câu bị động ĐT khuyết thiếu must: S+ must be+ Vp2+ by O. 

`7` The job had just been finished when the factory closed.

`8` That box hasn't been opened for the past hundred years.

Câu bị động HTHT: S+ have/ has+ been+ Vp2+ by O.

`9` Are these letters going to be mailed soon?

Câu bị động TLG dạng nghi vấn: Be+ S+ going to be+ Vp2.

`10` The report should have been finished yesterday.

Câu bị động HTHT: S+ have/ has+ been+ Vp2+ by O.

`11` Researches on SIDA began to be carried out by scientists two years ago.

`12` He is said to be the richest man in our town.

`13` You can be assured everything will be arranged in time.

Câu bị động ĐT khuyết thiếu can: S+ can be+ Vp2+ by O. 

`14` These homeless boys are to be pitied rather than to be despised.

`15` Nothing has been moved since you were sent away to be cured.

Câu bị động HTHT: S+ have/ has+ been+ Vp2+ by O.