`***` 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'

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`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.