can/could have done 和may/ might have done 表示对过去发生事情的猜测 哪一组可能性大一点?.can/could have done 和may/ might have done 都是表示对过去发生事情的猜测 哪一组可能性大一点?

can have done和 could have done有什么区别?那can have done什么用法？ could have done 和 can have done 有什么区别?还有would have done can have ddone 与could have done 的区别在于? 有must/could/can/may/maight have been done吗 could never have done could not have done 分析一下can may must could might could have分析一下can may must could might could have done might have done等 could't have done和can't have done的区别 can have done和could have done有无区别?can't have done和couldn't have done有无区别?如果有,区别是什么? 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 have done would have done should have done could have been done ,could have can have done could have done should have done should to do shouldn't have done shouldn't to do还有needn't have doneneedn't domustn't have donemay not have donemight not have done 有没有can have done sth?could have done sth有两种意思吗?can't/couldn't have done sth意思又是什么能不能举几个例子? could never have done 造句 how could you have done can’t +have done would have done,might have done,could have done,should have done分别表示什么意思?