摘要：情态动词 情态动词也是一类特殊的动词.平时我们不把它说成是动词.情态动词可以和行为动词同时出现在同一个句子中. 我们现在学过的情态动词有:can.must.should.would.may.could.shall. 注意:情态动词后动词总是用原形. 其否定形式:can not = can’t, must not = mustn’t, - 注意:may not和shall not 练一练: 选择填空. The sign on the wall means you stay away from the building. A. must B. can’t C. shouldn't How many books you see on the desk? A. may B. can C. should It means you make noise in the library. A. should B.. shouldn't C. can --- you like a glass of milk? --- Yes, please. A. May B. Could C. Would --- you see the sign over there? --- Sorry, I can’t. A. Can B. Can’t C. Should we go to the park by bus? A. May B. Must C. Shall

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