公开课——情态动词ppt课件.ppt

情态动词,高中英语语法复习,情态动词语法目录,一、情态动词表能力 二、情态动词表请求、允许 三、情态动词表必要性 四、情态动词表推测 五、情态动词+have done,（能够）,（能不能）,（必须）,（可能）,I can/ am able to swim.I could/ was able to climb a tree when I was a child.I will be able to swim next week.The fire spread through the hotel very quickly but everyone was able to get out.,1. can 表示现在的能力,2. could表示过去的能力,3. be able to 表能力，可用于多种时态,4. be able to 强调成功地做了某事,情态动词表能力,shall will、would,情态动词表请求、允许,高考真题演练,shall ，征求对方意见。e.g. Shall we begin our class? Shall he go now?2. 用于提出命令、允诺，或用于法律、规定e.g. You shall get my book on Sunday. He shall leave the house at once. The sign reads: No person shall smoke here!,用于第一、三人称,will would1. 用于向第二人称，征求对方意见。e.g. Would you please open the door?2. 表示个人主观意愿。e.g. I will help you anytime.3. used to do would表示“过去常常”；,“过去常常，强调现在不了”,1. When he was there, he _ go to that coffee shop at the corner every day. A. would B. should C. had better D. might2. Whats the name of the book? Khulaifi. _ I spell it for you? A. Shall B. Would C. Can D. Might,mustneed高考真题演练,情态动词表必要性,must 表“必须” dont have to neednt do dont need to2. must还可表示“偏偏、偏要”e.g. Must you make so much noise?,1. 不必须,mustnt 禁止,You _ buy a gift, but you can if you want to.must B. mustnt C. have to D. dont have to2. When I was young, I was told that I _ play with fire. A. wouldnt B. neednt C. mustnt D. darent3. - May I smoke here ? - If you _, choose a seat in the smoking area. A. should B. could C. may D. must,情态动词表推测,可能性的强弱层次must should/ought to can/could may/might,高考真题演练,must表示推测1. 可能性最强，只能用于肯定句e.g. That must be my pen. 2. must - 很可能 cant - 不可能e.g. That cant be my pen.,should / ought to表示推测根据经验的推测，“应当、应该”e.g. You photos should be ready by 12:00.2. 表示“竟然”，带有感情色彩。e.g. It is strange that you should like him.,can /could 表示推测1. 常用于否定句或疑问句。e.g. You cant be hungry already you had lunch only two hours ago!2. can用于肯定句中表示理论上的可能性，并不牵涉是否真的会发生e.g. You can hurt yourself if you play in the street.,may/ might表示推测1. can not 不可能 may not 可能不 2. may well “极有可能” e.g. Liza may well not want to go on the trip - she hates traveling.3. may/ might as well “不妨”e.g. You may as well stay for dinner.,1. That be Anns husband, for I am sure that he doesnt wear glasses.A. cant B. may not C. mustnt D. neednt 2. - Good morning. I got an appointment with Miss Smith yesterday. - Ah, you _ be Mr. Peter.A. might B. must C. would D. can,3. What do you mean, there are only ten tickets? There _ be twelve.A. should B. would C. will D. shall4. It is usually warm in my hometown in March, but it _ be rather cold sometimes. A. must B. can C. should D. would,5. Although this _ sound like a simple task, great care is needed. A. must B. may C. shall D. should,must have donecan/cant have done could have done should have doneneednt have donemight/may have done,情态动词+have done：表示对过去发生的事进行推测,高考真题演练,一定做了,可能/不可能做了,本可以做,本该做，而没做,本不必做，而做了,可能做了,1. - She looks very happy. She _ have passed the exam. - I guess so. Its not difficult after all. A. should B. could C. must D. might2. She _ have left school, for her bike is still here. A. cant B. wouldnt C. shouldnt D. neednt,3. - Im sorry. I _at you the other day. - Forget it. I was a bit out of control myself.A. shouldnt shoutB. shouldnt have shoutedC. mustnt shoutD. mustnt have shouted,4. You _ the exam, but you spent all your time playing.A. can pass B. could have passedC. could pass D. can have passed,5. - Catherine, I have cleaned the room for you. - Thanks. You _ it. I could manage it myself. A. neednt do B. neednt have done C. mustnt do D. shouldnt have done6. My MP4 isnt in my bag. Where_I have put it？A. can B. must C. should D. would,