Chuyển từ câu chủ động sang câu bị động

17 The teacher corrects our exercises

→ Our exercises are corrected by the teacher.

18 Mr.Smith saw the accident

→ The accident was seen by Mr.Smith

19 They started a dancing class last week

→ A dancing class was started last week.

20 You should insure the package

→ The package should be insured.

21 He may pay the bill for us

→ We may be paid the bill

22 You ought to water the plants once a week

→ The plants ought to watered once a week.

23 The mailman is delivering the mail now

→ The mail is being delivered by the mailman now.

24 Somebody has taken my briefcase

→ My briefcase has been taken.

25 The doctor ordered him to take a long rest

→ He was ordered to take a long rest by the doctor.

26 Lightning struck the house

→ The house was struck by lightning

`~rai~`

`text{17.Our exercises are corrected by the teacher.}`

`text{18.The accident was seen by Mr.Smith.}`

`text{19.A dancing class was started last week.}`

`text{20.The package should be insured.}`

`text{21.The bill may be paid for us by him.}`

`text{22.The plants ought to be watered once a week.}`

`text{23.The mail is being delivered by the mailman now.}`

`text{24.My briefcase has been taken.}`

`text{25.He was ordered to take a long rest by the doctor.}`

`text{26.The house was struck by lightning.}`