"mustn't","can't","needn't"的区别?

如题所述

mustn't 语气强,”禁止”:You mustn't step on the grass.
can't ”不能”; You can't be too serious;问句回答时:Can I go out to play? No, you can't.
needn't 表示不必这么做:常做must问句的回答:Must I finish my homework today? No, you needn't.
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第1个回答  2014-02-28
一般来讲.must带有强制愿望.相较而言感情色情更强烈些.
而need.may.can.感情色彩偏向中等.一般愿望.可有主观意愿.must主在强制意味.不得不.必须.本回答被网友采纳
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