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一、情態(tài)動詞的定義：情態(tài)動詞有詞義，但它不能單獨作謂語，它必須和其他動詞一起構(gòu)成謂語。情態(tài)動詞沒有人稱和數(shù)的變化；它的后面必須跟動詞原形。 二、情態(tài)動詞的種類：
三、情態(tài)動詞的用法及主要句型： 1、Can I help you? ——Yes, please. / No, thanks. 2、Can + 主語 + 動詞原形? Yes, ～ can. No, ～ can’t. 3、Can I borrow your book?----Yes,of course. 4、Can I write on the book? ------No, you can’t\mustn’t. 5、Could \Can you help me?---- Yes,of course.\Certainly.\ Sure. 6、Could \Can you tell me the way to the Zoo? 7、May I come in?----- Come in, please. 8、May I sithere?----- Yes, please.\Sorry, please don’t. 9、May I have someCoke?---- Yes, of course. 10、May/ Could / Can I speak toTom? -----Speaking. Who’s calling? 11、should 、shouldn’t 表示勸告： 1) He should get up early. 2) She shouldn’t play computer game too much. 12、Should +主語 +動詞原形? Yes, ～ should.\ No, ～ shouldn’t. 13、表示建議“你愿意…嗎” Would you liketo go shopping with me? -----Yes,I’d love to. /I’d love to. But I’m busy now. 14、就餐用語Wouldyou like something to eat\drink? ----Yes, I’d like… 15、shall用于第一人稱(I, we), 可以表示“將”和表示建議 “……好嗎?” 1) Where shall we have dinner? 2) Shall we go fishing? -----All right. \OK.\Good idea. 16、Must + 主語 + 動詞原形? ---Yes,～ must.\No, ～ needn’t. |
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