高中情态动词_图文.ppt

Jack—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 puter —The best thing I think is thatI canhave more spare time to take exercise after —Sure. By the way, who is your favorite sports star?Jack—LiuXiang, Ishould —Tell me something about —Well,maybe I can show you some use modal verbs to talk about:We use modal verbs to talk about:1. Ability (能力)2. Obligation (义务)3. Certainty (可能性)4. Permission (允许)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)情态动词的基本用法特点1)情态动词不能表示正在发生或已经发生的事情,只表示期待或估计某事的发生。2)情态动词除ought 和have 外,后面只能接不带to 的不定式。3)情态动词没有人称,数的变化,即情态动词第三人称单数不加-s。4)情态动词没有非谓语形式,即没有不定式,分词,等形式。只作情态动词的can / could, may / might, ought to, must可情态可实义的 need, dare 可情态可助动词的shall / should, will / would相当于情态动词的have to, used (能力):Liu Xiang can run the 110m hurdle race within 13 :1. can 一般表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。 English can be can not live without use your bike? girl can dance very can hurt yourself if you play in the can make is usually warm in my hometown in March, but it can be rather cold biggest problem for most plants, which ____ just get up and run away when threatened, is that animals like to eat them. (湖南2007)A. shan’t B. can’tC. needn’t D. mustn’t The World Wide Web is sometimes jokingly called the World Wide Wait because it ______ be very slow. A. Should B. must C. will D. cancan/could: 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 ’t/I’m afraid notcan/could:、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