2023年初升高语法专题情态动词课件

初升高语法专题--情态动词 1 表示“推测” can 只能用于否定句和疑问句中。could 不受此限。 He can’t be in our library now, for he went to America yesterday. He can’t/couldn’t have finished so much work in so short a time. Someone broke the window last night. Who can/could it be? How could she have forgotten her own name? 她怎么可能忘了自己的名字？ She could have passed the driving test, but she was too careless can与could that day.她本可以考过驾考的，但她太粗心了。 所有疑问句中表“推测”时，只能用can/could 不能may/might Sally is all wet. Where could she have gone. Sally全身湿透了。她刚刚可能去哪儿了？ 语气方面，could比can更委婉，might比may更委婉。 was /were able to do=succeeded in doing =managed to do 做成了某事 These peasants were able to escape in time. (这些农民及时逃出来了) Did you hear the news? Tom should cheat in the exam! Translation 你听说那个消息了吗？汤姆竟然在考试中作弊！ Our Enemies shall be destroyed！ 我们的敌人都将会被灭亡！（表决心） 1. shall 做情态动词时，用于第一，三人称，表示征求对方意见 Shall we begin at once? 我们现在开始可以吗？ Shall they wait here or outside? 要他们在这儿还是在外面等？ 2. 用于第二，三人称，表示“命令；警告；允诺等” shall 要重读 You shall fail if you don’t work harder. (警告） He shall be punished. （威胁） Nothing shall stop us from doing so. （决心） All of you shall arrive before 5 o’clock. （命令） shall与should The law of Venice says that if anyone tries to kill or murder any citizen of Venice, everything he owns shall be taken away from him. （法律；规定） 3. should 表示“应该,” ( ought to ; be supposed to ) You shouldn’t have lent him money in the past. One oughtn’t to be punished for what one hasn’t done. Children are supposed to go to bed early, for they are growing. 4.表示“推测” 意义为“理应” It’s three o’clock now. They should/ought to/are supposed to have arrived. 5.表示惊讶，意义为“竟然” He should have come late today. 他今天竟然迟到了。 It’s surprising that they should give up. 他们竟然放弃了，让人很惊讶的。 1.I will go shopping tomorrow. =I am going to go shopping tomorrow. 表将来 2.If you will go shopping with me, I will buy you anything. =If you would like to go shopping with me... 表意愿 Find out the difference I’d like a cup of coffee , plea