高中英语第一轮复习:情态动词

  王老师  151  0  2知币
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情 态 动 词
情态动词有 can/ could/ may/ might/ must/ have to/ shall/ should/ will/ would/
ought to/ need/ dare 等。情态动词没有人称和数的变化,有词义,但不
完整,不能独立作谓语,必须和不带 to 的动词不定式连用。
1can could
can could 表示能力
eg: He can swim, but I can’t.
can could 表示客观的可能性
eg: Kunming is called “Spring City”, but it can snow in winter.
can could 使could can
could can 没有的差要用,不
于肯定句,因此回答时要改用 can.
eg: ---Could I come here again tomorrow?
---Yes, you can./ No, I’m afraid not.
2、注意几组使用情态动词的提问和回答
eg: May I watch TV now?
---Yes, you may./ Yes, please.
---No, you mustn’t./ No, you’d better not.
Must I do it at once?
---Yes, you must.
---No, you needn’t./ No, you don’t have to.
Need I come?
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