PASSIVE VOICE
I. Form:                      Active:            S  + V + O + …….
–> Passive:           S + be + PP2  +  by +  O + ……
Ex:       Active:    She arranges the books on the shelf every weekend.
Passive:   The books are arranged on the shelf by her every weekend.
Điều kiện để có thể biến đổi 1 câu từ chủ động thành bị động:
- V trong câu chủ động phải là Transitive Verb (Ngoại động từ: đòi hỏi có O theo sau)
- Các O (trực tiếp, gián tiếp) phải được nêu rõ ràng
Quy tắc: Khi biến đổi 1 câu từ chủ động sang bị động ta làm theo các bước sau:
a. Xác định S, V, O và thì của V trong câu chủ động.
b. Lấy O trong câu chủ động làm S của câu bị động.
Lấy S trong câu chủ động làm O và đặt sau By trong câu bị động.
c. Biến dổi V chính trong câu chủ động thành PP2 (Past Participle) trong câu bị động.
II. Bảng các thời ở thể bị động: (Gồm 1 số thời chính thường dùng ở bị động)

Tenses
Active
Passive

Simple Present
S + V + O
S + be + PP.2 + by + O

Present Continuous
S + am/is/are + V-ing + O
S + am/is/are + being + PP.2 + by + O

Present Perfect
S + has/have + PP.2 + O
S + has/have + been + PP.2 + by + O

Simple Past
S + V-ed + O
S + was/were + PP.2 + by + O

Past Continuous
S + was/were + V-ing + O
S + was/were + being + PP.2 + by + O

Past Perfect
S + had + PP.2 + O
S + had + been + PP.2 + by + O

Simple Future
S + will/shall + V + O
S + will + be + PP.2 + by + O





I/ Change the following sentences from active into passive form.
1. Somebody has taken my briefcase.
2. The teacher returned our written work to us. 
3. She had finished her report by soon. 
4. The mad dog bit the little boy.
5. The police have arrested five suspects.
6. The doctor ordered him to take a long rest.
7 lightening struck the house.
8. A group of students have met their friends at the rail way station.
9. They didn’t allow Tom to take these books home.
10. The teacher won’t correct exercises tomorrow.
11. Marry has operated Tom since 10 o’clock.
12. This is the second time they have written to us about this.
13. Mr. Smith has taught us French for two year.
14. They didn’t look after the children properly.
15. Nobody swept this street last week.
16. People drink a great deal of tea in England.
17. People speak English all over the world.
18. Tom was writing two poems.
19. She often takes her dog for a walk.
20. They can’t make tea with cold water.
21. The chief engineer was instructing all the workers of the plan.
22. Somebody has taken some of my book away.
23. They will hold the meeting before the May Day.
24. They have to repair the engine of the car.
25. The boys broke the window and took away some pictures.
II/ Change the following sentences from active into passive form.
1     Yes – No questions.
1.Do they teach English here?
2.Will you invite her to your wedding party?
3.Did the teacher give some exercise?
4.Is she going to write a poem?
5.Have they changed the window of the laboratory?
6.Is she making big cake for the party?
7.Has Tom finished the work?
8.Are the police making inquires about the thief?
9.Must we finish the test before ten?
10.Will buses bring the children home?
    2   Wh – question:
11. When will you do the work?
12. How many days did she spend finishing the work?
13. How do you spend this amount of money?
14. What books are people reading this year?
15. How did the police find the lost man?
16. Who looked after the children for  you?
17. How long have they waited