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Unit 2 Sporting events Grammar and usage Modal verbs课件(59张)

日期:2024-05-22 科目:英语 类型:高中课件 查看:84次 大小:318016Byte 来源:二一课件通
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Unit,Sporting,events,Grammar,and,usage
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课件59张PPT。Unit2 Grammar and UsageModal verbsReviewstudying aims1.Review modal verbs. 2.Learn to use modal verbs with exercises. What’s the definition of modal verbs?情态动词是一种本身有一定的词义,表示说话人的情绪,态度或语气的动词,但不能单独作谓语, 只能和其他动词原形构成谓语。 What are the functions of modal verbs?一. We use modal verbs to talk about:1. Ability (能力) 2. Obligation (义务) 3. Certainty (可能性) 4. Permission (允许)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) How can we deal with exercises concerning modal verbs?Functions & usage of modal verbsLanguage context (上下文、语境)ThinkingFunctions & usage of modal verbsLanguage context (上下文、语境) 表能力的情态动词: can/could be able to 情态动词表示能力 情态动词表示能力时,一般用can/could或be able to。 1.can常指现在,较常用;如果只表示能力时,两者都可用。 e.g. I can / am able to swim. 2.be able to ① 可用于各种时态 e.g. We shall be able to finish the work next week. ② 侧重于“克服一定困难”“经过一定努力”“有能力”干某事 can ① 只有一般现在时和一般过去时两种 时态 ② 客观上能够即讲即练 The fire spread through the hotel very quickly but everyone ____ get out. A. had to B. would C. could D. was able to 答案:D情态动词表示推测的用法 (语气从强到弱) 1._____所表示的可能性最大,最有把握,意为“一定”。 2.can和could主要用于____句和___句中,can’t或couldn’t 表示“不可能”。 3.may和might表示现在或将来可能发生的动作或情况,主要用于____句中,might相对于may来说,表示的可能性更小一些。must→should→can→could→may→mightmust否定疑问肯定注意: 1 表示猜测,can/could一般不用于肯定句中,除非是“经验之谈”。 e.g. Anybody can make mistakes. 2 表示猜测,may和might都不用于疑问句中。 e.g. (正) Can /Could it be cloudy tomorrow?   (误) May /Might it be cloudy tomorrow?4. should也可以用来表示“推测”,意为“可能;该”,相当于be expected to。往往指具有一定的客观根据或根据推理对现在某事发生的“可能性”进行描述,语气上不如must强。 It’s nearly seven o’clock. Jack _____ be here at any moment. A. must B. need C. should D. can 答案:C 情态动词表示“许可”、“允许”的用法 can/could/may/might 过去式could常用于疑问句中,比can更加委婉,表示礼貌。回答时,常用原形can或者may,不可再用过去式could/might。 e.g. — Can/May/Could I use your pen? 肯定简略回答:— Yes, you can/may. — Yes, please. 否定简略回答:— No, you mustn’t. — Please don’t. _No, you may not.即讲即练 — Could I borrow your dictionary? — Yes, of course you ____. A. might  B. will C. can  D. should 答案:CSome of us can use the computer now, but we couldn’t last year. It will be sunny in the daytime, but it could rain later on this evening. --Can I go now? --Yes, you can. Could you wait a few days for the money? This can’t/couldn’t be done by him. 表示“能力”表示“客观可能性”表示“请求和允许”表示“请求”,口语中代替can,使语气更委婉,主要用于疑问句,答语用can.--Could I use your bike tomorrow? Yes,_____. No, _____.表示不相信的态度(主 ... ...

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