高中英语语法情态动词公开课课件

nullnullnullJack—I have good news for you! Rose—What? Jack—The educational department has carried out rules to reduce students' too much study load. Rose—Really? If so, I don’t have to stay up late to do so much homework and my mom may allow me to play computer games. Jack—The best thing I think is that I can have more spare time to take exercise after class. Rose—Sure. By the way, who is your favorite sports star? Jack—Liu Xiang, I should say. Rose—Tell me something about him. Jack—Well, maybe I can show you some photos. null1. Ability （能力） 2. Obligation （义务） 3. Certainty （可能性） 4. Permission （允许）一. We use modal verbs to talk about:null二.We also use modal verbs to:5. Make requests（提出请求） 6. Make suggestions（提出建议） 7. Make offers（提供帮助） 8. Give advice（提出意见）null1.Ability (能力):Liu Xiang can run the 110m hurdle race within 13 seconds.nullcan/could:1. can 一般 表 关于同志近三年现实表现材料材料类招标技术评分表图表与交易pdf视力表打印pdf用图表说话 pdf 示与生俱来的能力或者一种客观可能性,还可以表示请求和允许 。Learning English _____ be difficult.canMan can not live without air. _______ I use your bike?Cannullcan/could:2.在疑问句中，用could可表示请求，语气较委婉。— ____I have the television on? — Yes, you _____. / No, you _____CouldHe asks if he ____ smoke here.couldcan/maycan’t/I’m afraid notnullcan/could:3.表示惊异、怀疑、不相信的态度。（主要用在否定句、疑问句或惊叹句中） He’s such a nice person that he ______ commit the crime. can’t你怎么会如此地粗心！ How can you be so careless! Can this be true? nullcan/could:4. can never/can’t……too表示“无论怎样…也不过分”，“越…越好” 。你过马路的时候再小心也不为过。 You can’t be too careful while crossing the road. nullcan/be able to区别:Edison always wondered why hens could hatch (孵) chickens while he was not able to.Question: Are the two modal verbs interchangeable (互换) ? If not, why?can表示与生俱来的能力或一种客观可能，而be able to更加强调通过后天的学习和努力获得的能力，或者在某个客观的场合和背景下，能做到的事情。nullcan/be able to区别:A big fire broke out in ABC hotel yesterday. Luckily, everyone __________ run out of the building.was able to2. She _____ speak both English and French.cannullI’m so tired! I have to do the training for at least 10 hours a day! 2.Obligation (义务):…yet he must work hard to win the gold medal.Although Liu Xiang is so gifted in hurdle race…nulladvisabilitynecessityought to/shouldhave tomustYour mother brings you up and takes good care of you, so when she is old, you ___ look after her in return. A.can B.may C.have to D.must nullShi Dongpeng might win a medal at the Olympic Games.Although the chance of winning a medal is small, I’ll try my best! 3.Certainty (可能性) :nullvery uncertainalmost certainmightshouldmustmaycouldought towill1.He _____ be at home.2.He _____ be at home, for he just called me from his home 15 seconds ago.A.may B.might C.must A.may B.might C.must (can)mustmustmust 表示肯定的猜测，译为“一定”，不能用于否定句或疑问句。 This must be your pen. He must be doing his homework now. He must have arrived already.mustmust2. 表示“坚持”（常用于固定句型：if you must do sth. 如果你非得要做某事） 如果你真的要走，那就悄悄离开。If you must leave, do it quietly.null—They___ be doing the experiment in the lab. —Why？ —Because the lights are still burning.A.could B.can C.must D.would null4.Permission (允许):May I eat KFC if I win the gold medal?null1. 表示许可。表示请求、允许时，might比may的语气更委婉一些。may/might:— Might/May I use your computer? — Yes, you can. /No, you can’t/mustn’t. nullmay/might:2.用于祈使句中表示祝愿。3.表示推测、可能（只用于肯定句，疑问句则要用can或could）。 祝你成功！ May you succeed. He may be very busy now. May you be happy all your life. null5.Making requests (提出 要求 对教师党员的评价套管和固井爆破片与爆破装置仓库管理基本要求三甲医院都需要复审吗 ):Can you help me with my training?I don’t know how to use this equipment! will can could wouldinformalformalnull6.Making suggestions (提出建议):Shall we do the training in the morning?It’s too hot to take exercise in the afternoon. nullshall:1.Shall用于第一、第三人称疑问句中，表示说话人征求对方的意见、向对方请示或提供帮助 。1.Shall we begin our lesson? 2.When shall he be allowed to leave hospital? 3.Shall I carry this bag for you?nullshall:2.Shall用于第二、第三人称，表示说话人给对方命令、警告、允诺或威胁。 You shall fail if you don‘t work harder. He shall be punished according to the rule. 等我读完这本 书 关于书的成语关于读书的排比句社区图书漂流公约怎么写关于读书的小报汉书pdf ，就会给他的。 He shall have the book when I finish it.警告威胁允诺null7.Making offers (提供帮助):Don’t worry, dear, I will wash them right away.Mom, my dirty clothes have been piled up! I don’t have time……null1. 表示请求、建议等，would比will委婉客气。will/would:sentence pattern Would you please…Would you mind…Would rather…Would you like…nullwill/would:2.表示意志、愿望和决心。 I will never do that again. nullwill/would:3.可表示经常性、习惯性、倾向性。翻译为“经常、惯于、总是”。1).The old man _______have a smoke under a big tree every afternoon after he finished his farm work. wouldnull2).门就是打不开 ! The door won’t open. nullwill/would:I will go to the park with you tomorrow if you will offer me lunch. Question: Is this sentence correct? Why?情态动词表示 “意愿”null8.Giving advice (提出意见):You should not/ought not to eat so much before running.How delicious!!!nullshould:1.Should表示劝告、建议、命令，其同义词是ought to；在疑问句中，通常用should代替ought…to。Should I open the window? 我们应当要相互学习。 We should learn from each other.nullshould:2.情态动词should用于第一人称时可以表示说话人的一种谦逊、客气、委婉的语气。 Rose—Sure. By the way, who is your idol? Jack—Liu Xiang, I should say.I should advise you not to do that again. should:should:3. should表示意外或惊讶 常译为 “居然，竟然”。 I can’t believe such a gentleman should be so rude to the old. 我不敢相信这样一个绅士居然对老人如此无礼。 should:should:4. should 表示猜测时，一般指按经验或逻辑判断，翻译成“照说应该，估计，想必” ---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. need null三. “情态动词+have done”的用法 三. “情态动词+have done”的用法 （1）must have done对过去某事的十分肯定猜测 （2）may/might have done对过去某事的可能性猜测 （3）can’t/couldn’t have done对过去某事的否定猜测 （4）should/ought to have done过去应该做而未做 （5）shouldn’t/oughtn’t to have done 过去不应该做而实际上做了 （6）needn’t have done 本没有必要做的事实际却做了 （7）could have done 本来能够做的（有能力做）事实际却未做到 nullPracticePracticeWith so much work on hand, you ____to see the game last night. A. mustn’t go B. could have gone C. shouldn’t go D. shouldn’t have gone2. There was plenty of time. She ____. A. mustn’t have hurried B. couldn’t have hurried C. must not hurry D. needn’t have hurriedPracticePractice3. –I saw Mary in the library yesterday. --You_____ her. She is still abroad. A. mustn’t see B. can’t have seen C. mustn’t have seen D. couldn’t see4. Aunt Mary______the train, otherwise she would have arrived here by now. A. must have missed B. should have missed C. had missed D. might miss四. 可兼做行为动词的情态动词：need 、 dare 四. 可兼做行为动词的情态动词：need 、 dare 情态动词 (+动词原形)行为动词needdare 1.无人称和数的变化; 2.尤其用于：*否定句及疑问句中;*在if/whether之后;*或与hardly, never, no one, nobody连用; 3.常以needn’t 和daren’t 的形式出现;4.dare有其过去时dared. 多用于肯定句; (sb.) need to do dare to do (sth.) need to be done (sth.) need doing nullThese dishes need be cleaned carefully. These dishes need to be cleaned carefully. These dishes need cleaning carefully.He daren’t speak English before such a crowd, dare he?判断正误: He daren’t to speak English before such a crowd, did he?null五. 表示否定的情态动词的用法: 部分情态动词的否定式是情态动词中的考点 之一。 mustn’t 不准, 禁止 needn’t 没必要 ( = don’t have to ) can’t 不能; 不可能 may not 不可以; 可能不 shouldn’t 不应该 ( = ought not to )null How can we deal with exercises concerning modal verbs?Functions & usage of modal verbsLanguage context (上下文、语境)Functions & usage of modal verbsLanguage context (上下文、语境)nullReview the usage of modal verbs and finish the exercise paper null