Câu bị động ( Thì HTĐ - QKĐ ) :

`-` Thì HTĐ : `\text{S + be + V3 / PII ( by O )}`

`-` Thì QKĐ : `\text{S + was / were + V3 / PII ( by O )}`

`7`.Rice is grown

`8`.He was helped by somebody

`9`.The test was done very well

`10`.She wasn't helped

`11`.Lan is helped by Nam

`12`.Lan and Hoa are helped by Nam

`13`.I am helped by Nam

`14`.Lan was helped by Nam

`15`.Lan and Hoa were helped by Nam

`\text{@ TheFox}`

7. People grow rice.

⇒ Rice is grown.

8. Somebody helped him.

⇒ He is helped.

9. Everybody did the test very well.

⇒ The test was done very well.

10. Nobody helped her.

⇒ She wasn't helped.

11. Nam helps Lan.

⇒ Lan is helped by Nam.

12. Nam helps Lan and Hoa.

⇒ Lan and Hoa are helped by Nam.

13 Nam helps me.

⇒ I am helped by Nam.

14 Nam Helped Lan. 

⇒Lan was helped by Nam.

15 Nam helped Lan and Hoa.

⇒ Lan and Hoa were helped by Nam.

Cấu trúc: Câu bị động:

+ Ở thì hiện tại đơn: S + am/is/are (not) + Pii + by O...

+ Ở thì quá khứ đơn: S + was/were (not) + Pii + by O...

* Nếu O là các đại từ bất định như: everyone, someone, noone, anyone,... hay people thì có thể lược "by + O"

@Bulletproof