`***` Chủ động thì QKĐ: S + Ved/c2 + O

`->` Bị động thì QKĐ: S (từ O) + was/were + Vpp + (by + O (từ S) )

`-` 'was' dùng với S số ít, 'were' dùng với S số nhiều

`-` Các đại từ bất định (VD. someone, somebody, everyone, v.v) hoặc đôi khi các từ như 'they, we, v.v' không cần thiết phải dùng 'by + O'

`-` Trạng từ chỉ thời gian đứng sau 'by + O', chỉ nơi chốn đứng trước 'by + O'

`----------`

`1.` Many rhinos were killed for their horns.

`2.` The burglar was arrested by the police last week.

`3.` Was recycled paper used for your project?

`4.` Breakfast was brought to my room yesterday.

`5.` Italian and Spanish weren’t taught at my school.

`6.` All our vegetables were bought at the market.

`7.` Real Madrid FC wasn’t beaten by Barcelona FC in yesterday’s match.

`8.` The old man was helped to find his luggage.

`9.` New measures against crime were introduced by the new government.

`10.` The play was performed without an interval.

$\text{Form:}$

`+)` CĐ: S + V(ed/PII) + adv/O

`->` BĐ: S + was/were + V(PII) + adv/O + (by sb)

`+)` Was/Were + S + V(PII) + adv/O?

`+)` Tính từ sở hữu + N

-------------------------------------------------

`1.`

`->` Many rhinos were killed for their horns.

`2.`

`->` The burglar was arrested by the police last week.

`3.`

`->` Was recycled paper used for your project?

`4.`

`->` Breakfast was brought to my room yesterday.

`5.`

`->` Italian and Spanish weren’t taught at my school.

`6.` 

`->` All our vegetables were bought at the market.

`7.`

`->` Real Madrid FC wasn’t beaten by Barcelona FC in yesterday's match.

`8.`

`->` The old man was helped to find his luggage.

`9.`

`->` New measures against crime were introduced by the new government.

`10.`

`->` The play was performed without an interval.