36. 3 hostages have been hept by this terrorist for a week

37.You have not been seen by him for years

38.The passage will be read by the examiner

39.The town was destroyed by an earthquake

40.The letter was not typed by him last night

41.I will be picked up by them at my house

42.When was he seen by you in that bank?

43.The keys were returned to me by a man

44.Her friends will be seen off by Mary at the station

45.That building must be pulled down by them

46.I was given a knife to cut this bread by him

47.Beer was drunk by them in England

48.3 shirts can be seen by her a day

49.She is considered to be the best singer

50.This room has not been used for ages

Cấu trúc câu bị động : 

- Thì QKĐ : S + was/were + PII....

-Thì QKTD : S + was/were + being + PII...

- Thì HTHT : S + have/has + been + PII...

- Thì TLĐ : S + will + be + PII...

- Động từ khuyết thiếu : S + modal verb + be + PII...

36. 3 hostages have been kept by this terrorist for a week (bị động HTHT: have/has + been + p.p)

37. You haven't been seen (by him) for years (bị động HTHT)

38. The passage will be read by the examiner 3 times (Bị động TLĐ: will be + p.p)

39. The town was destroyed by an earthquake (bị động QKĐ: was/were + p.p)

40. The letter wasn't typed (by him) last night (bị động QKĐ)

41. I will be pick up at my house (bị động TLĐ; they thường được lược bỏ trong câu BĐ)

42. When was he seen (by you) in that bank? (bị động QKĐ)

43. The keys were returned to me (by a man) (bị động QKĐ)

44. Her friends will be seen off by Mary at the station (bị động TLĐ)

45. That building has to be pulled down (bị động: have/has to + be + p.p)

46. Bị động 2 tân ngữ: S + V + s.one + s.th

`->` S.th + V(chia theo thì dưới dạng BĐ) + to s.one + (by S) 

`->` S.one + V(chia theo thì dưới dạng BĐ) + s.th + (by s.one)

- A knife was given to me (by him) to cut this bread (Bị động QKĐ)

- I was given a knife (by him) to cut this bread

47. Beer used to be drunk in England (bị động: used to + be + p.p)

48. 3 shirts can be sewed (by her) a day (bị động: can be + p.p)

49. Bị động kép (HTĐ, TLĐ): S + think/say/believe/.... + that + Clause (HTĐ,TLĐ)

`->` It's thought/said/believed/....(Vp.p) that + Clause

`->` S.one + tobe + thought/said/believed/...(Vp.p) + to V

- She is considered to be the best singer

- It is considered that she is the best singer

50. This room hasn't been used for ages (bị động HTHT; nobody được lược bỏ trong câu BĐ; nobody mang ý PĐ nên ta thêm not)