can't have done 表示过去的“可能”
例如 He can't have missed the train
他不可能没赶上那列火车
而must have done 也表示对过去的推测
但是否定却是can't have done
也就是说musn't have done 没有这种用法
musn't have done can't have done
3个回答
相关问题
-
can't have done与could't have done的区别
-
could't have done和can't have done的区别
-
情态动词can't have done 和couldn't have done 有什么区别吗
-
should have done ,shouldn't have done.could have done,couldn
-
区别shouldn't have done 和 needn't have done
-
couldn't have done和mightn't have done有什么区别
-
can't/won't have+宾语+doing/done什么意思?
-
有没有can have done sth?could have done sth有两种意思吗?can't/couldn'
-
I have done sth 的否定是 I don't have done 还是I haven't done 呢 到底
-
needn't have done和mustn't have done有什么区别？意思不都差不多吗？