如题所述
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can
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2ãIt is an intolerable situation and it can't be allowed to go on.
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3ãWhat can I do around here?
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4ãCan I have a look at that?
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have to
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must
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2ãYou must see a doctor, Frederick.
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3ãThis must be a very difficult job for you.
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第1个回答 2016-08-03
can 表示可以,主语有能力去做某事;
have to 表示不得不,主语因某些原因被迫去做某事(偏被动);
must 表示必须,主语因某些原因必须做某事(偏主动)。本回答被提问者采纳
have to 表示不得不,主语因某些原因被迫去做某事(偏被动);
must 表示必须,主语因某些原因必须做某事(偏主动)。本回答被提问者采纳
第2个回答 2021-01-14
情态动词must只有一种形式,而have to根据人称或时态有形式上的变化,如:其单三形式为has to, 过去式为had to。情态动词must和 have to的主要用法及比较如下:
第3个回答 2016-08-03
意思不一样,一次是可以,不得不,必须