Teacher: Quỳnh Giang
THỂ THỤ ĐỘNG
(THE PASSIVE VOICE)
* Thể chủ động (active voice) là cách đặt câu mà chủ từ đóng vai trò chủ động.
- Mr. Brown wrote the report yesterday.
- He has already finished his homework.
* Thể thụ động (passive voice) là cách đặt câu mà chủ từ đóng vai trò bò động.
- That house was built 100 years ago.
- Those windows are painted blue.
 Passive sentence : S + be + past participle
1/ Hãy quan sát ví dụ sau :
* Active : Tom broke the chair yesterday.
S V O
* Passive : The chair was broken by Tom yesterday.
S be + P.P by doer
2/ Ghi nhớ: Cách đổi một câu từ active sang passive :
* Lấy túc từ (O) trong câu chủ động xuống làm chủ từ (S) trong câu thụ động.
* Nhận xét xem động từ chia trong câu chủ động ở thì nào, ta chia TO BE ở thì
đó rồi viết động từ chính ở dạng quá khứ phân từ (p.p).
* Lấy chủ từ (S) trong câu chủ động xuống làm doer trong câu thụ động, nhớ
viết BY ngay đằng trước.
* Trạng từ giữ nguyên không đổi và thường đặt cuối câu (nếu là trạng từ chỉ thời
gian).
3/ Một vài ví dụ khác :
+ (a) simple present : [Subject+ am / is / are + P.P ]
- Mr.Green teaches history.
 History is taught by Mr.Green.
+ (b) present perfect : [ S + has / have + been + p.p ]
- He has just done his homework.
 His homework has just been done by him.
+ (c) present continuous : [ S + am / is / are / + being + p.p]

 He is never heard to shout at his children.
+ (l) perception verb with present partciple : [ S + be – p.p + V-ing ]
- I saw the boy coming into the room.
 The boy was seen coming into the room.
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Teacher: Quỳnh Giang
+ (m) With ‘make’ : [ S + be – made + to inf ]
- They made me do it.
 I was made to do it.
+ (n) With ‘let’ : [ S + be – let + bare inf ]
- They let him do it.
 He was let do it.
+ (o) With ‘begin or start’: [ S + begin / start + to be + p.p ]
- They began to build the house in 1980.
 The house began to be built in 1980.
+ (p) With “say, report, rumour…’:
- People say that prevention is better than cure.
 It is said that prevention is better than cure.
 Prevention is said to be better than cure. (…cách đổi này được áp dụng
cho các động từ như: SAY, REPORT, THINK, BELIEVE, RUMOUR…)
+ (q) câu mệnh lệnh : [ Let + O + be – p.p ]
- Open the door, please.
 Let the door be opened, please.
EXERCISE I : Supply the correct tense and voice.
1/ Everyone (shock) … was shocked … by the news yesterday.
2/ Almost everyone (enjoy)… enjoyed … the lecture last night.
3/ English (speak) _________ all over the world.
4/ A terrible accident (happen) _________ right here at 6 o’clock last night.
5/ Mr. Smith (teach) _________ at this university since 1985.
6/ Not much (say) _________ about the matter since last week.

- ______________________________________________________
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Teacher: Quỳnh Giang
12/ The enemy used to attack the bay.
- ______________________________________________________
13/ The fire has destroyed many houses.
- ______________________________________________________
14/ The children are carrying the chairs into the house.
- ______________________________________________________
15/ They awarded him the Nobel Prize for medicine in 1946.
- ______________________________________________________
16/ We saw him leave the office at 6 o’clock this morning.
- ______________________________________________________
17/ My parents didn’t let me go to school this morning because I was ill.
- ______________________________________________________
18/ You ought to water these plants once a week.
- ______________________________________________________
19/ People saw her driving a car near the bridge.
- ______________________________________________________
20/ They said that he was the richest man in the town.
- ______________________________________________________
21/ Scientists began to carry out researches on AIDS in 1981.
- ______________________________________________________
22/ The boy knew that they were praising him.
- ______________________________________________________
23/ Everybody believed that he had died of lung cancer.
- ______________________________________________________
24/ They hadn’t built the bridge when we first came here.
- ______________________________________________________
25/ I can assure you that I will arrange everything in time.