Lesson2Parties.doc

Unit 3 CelebrationLesson 2 Parties同步辅导与测试一、must 与 have to 的区别1. must表示主观意愿，意为必须、应该。例如：You must attend the class meeting.你应该出席这个班会。He must return the story-book.他必须将这本故事书还回来。2.以must引起的疑问句，否定回答通常用neednt或dont/doesnt have to，意为不必。例如：-Must I clean the classroom?我必须打扫教室吗？-Yes, you must(No, you neednt/No, you dont have to).是的，你必须(不，不必了)。3. must的否定结构mustnt意为禁止、不许，语气较为强烈。例如：You mustnt go swimming today.你今天不许去游泳。You mustnt drive so fast.不许开得这么快。4. must可表示有把握的判断或推测，意为一定、准是，一般用在肯定句中。例如：He must be a middle school student.他一定是名中学生。She must live in Beijing.她一定住在北京。5.在You must.句中，它的意思与祈使句相同。例如：You must come here early.=Come here early!早点来这儿！You must hurry up!=Hurry up!你必须快点！6. must与have to都有必须、应该的意思。但二者有区别：1) must侧重于个人意志和主观上的必须，have to则侧重客观上的必须，可译为不得不。must与have to经常可以互换使用。例如：I must/have to go to school now.现在我必须上学了。2) must可用来表示现在和将来的必须，无时态变化；have to则有更多的时态变化。例如：He had to give up the plan.他不得不放弃这个计划。I will have to buy a new pen.我不得不买枝新笔。3)变否定句时，must只要直接在其后加not，而have to既可变成havent to，也可变成dont have to/doesnt have to。二、表示劝告、命令、 建议, 其同义词是ought to。在疑问句中通常用 should代替 ought to。You shouldnt drink too much at parties.You should/ought to do it right now./ Should I open the window for you?在餐会上你不应该喝得太多。注意too much 与much too 的区别。much too 意思是“太”只可以作副词词组，修饰形容词或副词，不可以修饰动词。too much 是“太多”的意思，有以下三种用法：（1）用作名次词组：You have given me too much. (你给我太多了。)（2）用作形容词词组，修饰不可数名次。I drank too much beer last night. (昨天晚上我喝太多啤酒了。) （3）用作副词词组，修饰不及物动词。She talks too much. (她说得太多了。)三、neednt, dont have to与dont need to通常这三者都表示没有必要做某事。You neednt have the paper typed.你没必要把文件打出来。We dont need to be there on timethey always begin late.我们不必按时到那里，他们总是很晚开始。We dont have to carry all of our books to school every day.我们不需要每天带所有书到学校。四 can 和could的用法1 表示能力。如：Can you finish the work in such a short time?在这么短的时间内你能完成这项工作吗？Can和 be able to 都可表“:能够” 但can 主要指的是一种永久的能力。而be able to则是指过去做成了的事或者将来经过努力后可以做到的事情。如： He was able to jump off the bus when it was running off the way.Man will be able to live in the sea in the future.注意，这两处的be able to都不可换用 can。2表示可能性。如：Mary can not be in the classroom.3表示许可和请求-Can I use your bike?-Yes, you can.注意：could用来表示请求时，是一种委婉的说法，回答时不可用过去式could 进行回答。而要用原形can-Could you tell me the way to the post office , Please?-Yes, I can.4常用于疑问句或否定句，表示惊异、怀疑或不相信的态度。Can hard work change a person that much? ( How can you be so careless.)练习从A、B、C、D四个选项中，选出可以填入空白处的最佳选项。1. Mike, you _ play with fire. You_ burn yourself.A. wont; cant B. mustnt; mayC. dont have to; must D. have got to; shouldnt2. You _ see the doctor, Joe. You dont look very well.A. must B. shall C. may D. can3. Must I clean the window now?No, you _.A. mustnt B. neednt C. cant D. may not4. Jacks ill, so they _ change their plans.A. must B. should C. have got to D. ought to5. Harry has been reading all day he _ be tired.A. should B. has got to C. has to D. must6. Lucy doesnt mind lending you her dictionary. - She _. Ive already borrowed one. A. cant B. mustnt C. neednt D. shouldnt7. He paid for a seat, when he _ have entered free. A. could B. would C. must D. need8. John, look at the time. _ you play the piano at such a late hour? A. Must B. Can C. May D. Need9. I often see lights in that empty house. Do you think I _ report it to the police? A. should B. may C. will D. can10. Isnt that Anns husband over there? - No, it _ be himIm sure he doesnt wear glasses. A. cant B. must not C. wont D. may not11. Children under 12 years of age in that country _ be under supervision when in a public library. A. must B. may C. can D. need12. I _ put Tracy a visit, Im not sure whether I will have time this Sunday. A. should B. might C. would D. could13. Who is the girl standing over there? -Well, if you _ know, her name is Mabel. A. may B. can C. must D. shall14. Tom graduated from college at a very young age. -Oh, he _ have been a very smart boy then. A. could B. should C. might D. must15. How _ you say that you really understand the whole story if you have covered only part of the article? A. can B. must C. need D. may16. My English-Chinese dictionary has disappeared. Who _ have taken it? A. should B. must C. must D. would17. It has been announced that candidates _ remain in their seats until all the papers have been collected. A. can B. will C. may D. shall18. You cant imagine that a well behaved gentleman _ be so rude to a lady. A. might B. need C. should D. would19. Sorry, Im late. I _ have turned off the alarm clock and gone back to sleep again. A. might B. should C. can D. will20. There was a lot of fun at yesterdays party. You _ come, but why didnt you? A. must have B. should C. need have D. ought to have21. When can I come for the photos? I need them tomorrow afternoon? - They _ be ready by 12:00. A. can B. should C. might D. need22. The fire spread through the hotel very quickly but everyone _ get out. A. had to B. would C. was able to D. could23. Sir, you _ be sitting in this waiting room. It is for woman and children only. A. oughtnt to B. cant C. wont D. neednt24. Was there an answer to my telegram? - Margaret said there _ one. A. must have been B. must have had C. seems to be D. seemed to have25. Can children swim in this pool? -Yes. However, at no time _ they do so alone. A. may B. need C. could D. should26. It seven oclock already. Mary _ be home by now. -Oh, I forgot to tell you that she was going to a party and wouldnt be home until 10. A. must B. should C. might D. could27. Lisa hasnt lived here for long. She _ know many people. A. neednt B. cant C. shouldnt D. didnt28. Im not sure if Im going to Jeffs party. I _ go to the concert instead. A. can B. must C. may D. should29. Jenny _ have kept her word. I wonder why she changed her mind. A. must B. should C. need D. would30. Its nearly seven oclock. Jack _ be here at any moment. A. must B. need C. should D