could have done和need have
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could have done和need have
could have done和need have
could have done和need have
need have done 是表示需要做某事却没有做.could have done本能做某事却没有做(不含谴责意味),拓展.should have done本能做某事却没有做(含谴责意味)eg;I should have passed the exam if I did not stay up.
need have done 是表示本应该做某事却没有做
could have done 是一种对已经发生的事情的推测
could have done和need have
could have done和would have done的区别
should have done和could have done的区别?
高中英语中might have done 和could have done
could have done 和 might have done 的区别
情态动词+have done 用法及意义must have done need have done daren't have donecould never have done could have done
could have done 和 can have done 有什么区别?还有would have done
can have done和 could have done有什么区别?那can have done什么用法?
need have done ,must have done ,can/could have done ,should have done 的区别是什么?意思是什么?主要用于哪种句型?请分别举例说明,
could never have done
could not have done
could't do 和could't have done还有could do,could have done的区别和用法
求两组英语句型的解释could have done 和 couldn't have doneshould have done 和 shouldn't have done
Could have done would have done should have done
could have been done ,could have
could/should/must/.加have done和have been done区别
could have done 和 should have done的用法是否一样?
could't have done和can't have done的区别