mustnt have done与cant have done区别啥区别
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mustnt have done与cant have done区别啥区别
mustnt have done与cant have done区别
啥区别
mustnt have done与cant have done区别啥区别
1.情态动词must+have done只用于肯定句中,表示对过去发生的事情或状态进行肯定的推测,意为”过去一定做过某事”.
如:
1)It must have rained last night,for the road is all wet.
昨天晚上一定是下雨了,因为路还湿着.
2.情态动词can/could可用于否定句中,即can't have done/couldn't have done,表示对过去发生的事情或状态的肯定的推测,意为“过去不可能做过,肯定没做过”,与musthavedone正好相反.
如:
1)He can't have taken it home.
他不可能把它带回家.
一般来说,没有must not have done的用法
mustnt have done
mustnt have done与cant have done区别
mustnt have done与cant have done区别啥区别
can,cant must,mustnt have to,dont have to 求大神翻译全部
can have ddone 与could have done 的区别在于?
can’t +have done
have done与have be done
can have done和 could have done有什么区别?那can have done什么用法?
musn't have done can't have done用法区别
could have done 和 can have done 有什么区别?还有would have done
can't have done 的用法
高中英语中can与may,could、might、may、would/+have done 的区别
have ever done 与 have never done的区别
would rather have done 与should have done 的区别
have done 与have been done的区别
should have done与should have been done的区别?
have something done 与have sth.to be done 区别
英语:should have done与could have done区别?