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Weve learned something about passive voice in Unit 3. Can you recall exactly what weve learned?第1页/共33页被动语态 (Passive Voice) 被动语态的基本构成形式：主语 + be + done (过去分词)语态共有两种： 主动语态 (active voice) 被动语态 (passive voice)We speak English.English is spoken by us.第2页/共33页A. 一般现在时的被动语态：B. 一般过去时的被动语态：waswere+ p.p. (过去分词)amisare+ p.p. (过去分词)第3页/共33页What does Ricky hope at the end of his e-mail?He hopes more events like this to raise money for charity.Questionorganizedwill be 第4页/共33页Tom will clean the room tomorrow.主 谓 宾The room will be cleaned by Tom tomorrow.第5页/共33页Subject will be / be going to bePast participleI will be / am going to behelped.You / We / They will be / are going to beHe / She / It will be / is going to be第6页/共33页We use the passive voice in the simple future tense when theaction has not taken place yet.第7页/共33页Why was Ricky so busy before the show?A lot of work .Questionneed be finished第8页/共33页含有情态动词的被动语态含有情态动词的主动句变成被动句时，由“情态动词 + be + 过去分词”构成，原来带“to”的情态动词变成被动语态后“to”仍要保留。第9页/共33页e.g.We can repair this watch in two days.This watch can be repaired in two days.They should do it at once.It should be done at once.第10页/共33页Amy can take good care of Gina.Gina can be taken good care of by Amy.第11页/共33页Subject Modal verbsPast participleI can (may, must, should) behelped.You / We / They can (may, must, should) beHe / She / Itcan (may, must, should) be第12页/共33页肯定形式肯定形式否定形式否定形式疑问形式疑问形式S + can / may/ must / shouldnot+ be + doneS + can / may/ must / should+ be + doneCan / May/ Must / Should + S +be + done第13页/共33页(should / hang / across the stage)The curtains should be hung across the stage.(may / stick / on the side door)The exit may be stuck on the side door.P67课本练习第14页/共33页(can / arrange / in front of the stage)Seats can be arranged in front of the stage.(should / place / at both sides of the stage)Lights should be placed at both sides of the stage.第15页/共33页(must / set / in the middle of the stage)The microphone must be set in the middle of the stage.(may / put / in the four corners of the school hall)The speakers may be put in the four corners of the school hall.第16页/共33页Was the show a success? How do you know?A lot of money to Project Green Hope.Questionhas been donated第17页/共33页We have made twenty more keys.Twenty more keys have been made by us.第18页/共33页Subject have / has beenPast participleI have beenhelped.You / We / They have beenHe / She / Ithas been第19页/共33页C. 一般将来时的被动语态：willbe going to+ be + p.p. (过去分词)D. 情态动词的被动语态：E. 现在完成时的被动语态：havehas+ been + p.p. (过去分词)can mustmay+ be+ p.p. (过去分词)should第20页/共33页第21页/共33页1. Our room must _ clean. A. keep B. be kept C. to be kept D. to keep2. - Id like to buy that coat. - Im sorry. _. A. It sold B. Its selling C. Its been sold D. It had been soldI. 单项选择第22页/共33页3. The key _ on the table when I leave. A. was left B. will be left C. is left D. has been left4. These papers _ yet. A. have not written B. have not been written C. has not written D. has not been written第23页/共33页5. His new book _ next month. A. will be published B. is publishing C. is being published D. has been published6. The sports meet _ be held until next week. A. didnt B. wont C. isnt D. doesnt第24页/共33页7. _ the watch been repaired yet? I badly need it. A. Does B. Has C. Is D. Are8. _ these desks be needed? A. Will B. Are C. Has D. Do第25页/共33页9. More man-made satellites _ into space. A. must sent up B. can sent up C. must be sent up D. may be send up 10. This _ in a short time. A. cant be done B. can done C. must be do D. is done第26页/共33页11. Must the composition _ in an hour? A. will be finished B. has been finished C. is finished D. be finished12. Mars _ soon in the future by human beings. A. maybe visit B. maybe visited C. may be visit D. may be visited第27页/共33页II. Complete the sentences with the correct form of the words.1. The room _ (clean) just now. 2. More trees _ (plant) in spring next year.3. The room _ (should clean) every day.4. The old _ (must speak) to politely.was cleanedwill be plantedshould be cleanedmust be spoken第28页/共33页5. We _ (invite) to Anns birthday party yesterday.6. Trees _ (must water) well.7. Where _ the charity show _ (hold) tomorrow?8. The work should _ (do) at once.were invitedmust be wateredwillbe heldbe done第29页/共33页9. I think one day books may _ (replace) by computers.10. Paper should not _ (throw) away.11. Books and CDs can _ (borrow) from the library.be replacedbe thrownbe borrowed第30页/共33页Finish the exercises on P66, P68 and P69. 第31页/共33页第32页/共33页感谢您的观看！第33页/共33页
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