Đây là dạng bt chuyển câu chủ động thành câu bị động

CT: Be+ Vpp

- S + V(s/es) + O ⇒ S + am/is/are + Vpp

- S + V_ed + O ⇒ S + was/were + Vpp

5. They sell jeans all over the world.

⇒Jeans are sold over the world

6.you must do the exercise carefully

⇒The exercise must be done carefully

7. We can solve the problem.

⇒The problem can be solved

8.People should stop experiment on animals

⇒Experiment on animal on animals should be stopped

9.We might find life on other planet.

⇒Life on other planet might be found 

10.We have to improve all the schools in the city.

⇒All the schools in the city have to be improved

`5. ⇒`Jeans are sold over the world

`6. ⇒`This exercise must be done carefully

`7. ⇒`This problem can be solved

`8.⇒`Experiments on animals should be stopped

`9. ⇒`Life on another planet might be found 

`10. ⇒`All the schools in the city have to be improved

Đây thuộc loại câu chủ động `->` câu bị động

*Cấu trúc chung: Be + `V_(PP)`

`+)`S + V(s/es) + O `⇒` S + am/is/are + P2

`+)` S + V(ed/Ps) + O `⇒` S + was/were + P2