关于can't 和mustn't的选择

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/22 01:40:07

关于can't 和mustn't的选择
1.---May I ask for a week's leave?
----No,you ( ).We'll be very busy this week.
答案是mustn't而不选can
2.You ( ) not go now.You must stay here till 5
答案是can而不选must
我觉得这两句意思差不多啊,所以很迷惑,

第一句要用musn't,是不可以而不是不能
第二句用can,是说你只有在5点之后才能走.

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