don't have to=need't =don't need to?
don't have to=need't =don't need to?
其他人气:898 ℃时间:2019-10-29 11:11:33
优质解答
是的.均可表示不需要,没有必要.存在can be/must be ,can’t be 而没有mustn't be 对吗?有mustn't be ,不过意思是不可能。有个题目 isn't your teacher over there? no,it()be him 其中两个选项can'tmustn'tcan't be不可能是我的老师。musn't be 是不能
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