【摘 要】
：
情态动词can,may,must大家都学习过了,它们的共同特征是:虽有具体的词义,但不完整,不能在句中单独作谓语,必须与其他动词一起构成谓语,表示说话人的语气和情态。它们既没有人
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情态动词can,may,must大家都学习过了,它们的共同特征是:虽有具体的词义,但不完整,不能在句中单独作谓语,必须与其他动词一起构成谓语,表示说话人的语气和情态。它们既没有人称也没有数的变化,其后必须跟动词原形。但在用法上它们既有相同之处,又有不同之处。下面我们一起来回顾一下吧。一、相同之处1.三者都可以用来表示可能性,具体来说:(1)can在否定句和疑问句中表示猜测、怀疑或不肯定。在否定句中意
The modal verb can, may, must we all have learned, and their common feature is: although the specific meaning of words, but not complete, can not be used as a separate predicate in the sentence, must be formed with other verbs predicate, that the tone of the speaker And modality. They have neither human nor material change, and must be followed by the verb prototype. However, they have similarities and differences in usage. Let’s review together below. First, the same place 1. All three can be used to express the possibility, specifically: (1) can in the negative sentences and interrogative sentences that speculation, doubt or uncertainty. In negative sentences
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