情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)

1、2021/8/61含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)2021/8/62 can/could be done must be done should be done may/might be done had better be done have to be done含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)：含情態(tài)動(dòng)詞的被動(dòng)語(yǔ)態(tài)： 情態(tài)動(dòng)詞情態(tài)動(dòng)詞+be +PP2021/8/63否定式：情態(tài)動(dòng)詞否定式：情態(tài)動(dòng)詞+not + be + p.p can/could not be done must not be done should not be done may/might not be done had

2、better not be done have not to be done2021/8/64疑問(wèn)式：情態(tài)動(dòng)詞疑問(wèn)式：情態(tài)動(dòng)詞+ 主語(yǔ)主語(yǔ)+ be + p.p can/could +主語(yǔ)主語(yǔ) +be done must +主語(yǔ)主語(yǔ) + be done should +主語(yǔ)主語(yǔ) + be done may/might +主語(yǔ)主語(yǔ) + be done had +主語(yǔ)主語(yǔ) + better be done have +主語(yǔ)主語(yǔ) + to be done2021/8/651.I can finish the work. The work can be finished by me. Can the w

3、ork be finished by you?2.We should plant many more trees. Many more trees should be planted by us. Should many more trees be planted by us?2021/8/66Teenagers should be allowed by parents to drive the car .3.Parents should allow teenagers to drive the car.Should teenagers be allowed by parents to dri

4、ve the car ?4.You can pass the exam if you study hard.The exam can be passed (by you) if you study hard.Can the exam be passed (by you) if you study hard?2021/8/67water(澆水澆水)Trees must be watered by them every day.They must water trees every day.Must trees be watered by them every day?2021/8/68Peopl

5、e may catch fish in the river.Fish may be caught in the river (by people).2021/8/691.My mother can cook delicious meals. Delicious meals can be cooked by my mother.2. Students will use these textbooks next term.These textbooks will be used next term by students .3. You should water trees often . Tre

6、es should be watered by you often .4.You must not plant trees in very dry earth .Trees must not be planted by you in very dry earth. 2021/8/6103. Sixteen-year-olds should be allowed to drive.(先改為否定句，再改一般疑問(wèn)句先改為否定句，再改一般疑問(wèn)句) Should sixteen-year-olds be allowed to drive?Sixteen-year-olds shouldnt be all

7、owed to drive.Yes they should./ No, they shouldnt.4. I think the work should be done at once.(改為否定句改為否定句)I dont think the work should be done at once.2021/8/611Drills:1.We should look after elder people very well.2.We should answer these questions as soon as possible.3.We must clean our classroom this afternoon.4.You must hand in your homework before nine oclock.5.You can bring your friends to my birthday party tomorrow eve