应该是not have done 还是 hane not done
应该是not have done 还是 hane not done
could not have done
not having done 还是having not done?
请问是have not only done ...but also done ...还是 have not only d
May not have done 是表示可能不还是不可能 那Could not have done呢
have not done 和 not have done 区别在哪?
could not have done是什么意思?
not done
should have done 和should not have done的区别
can not done sth 和shouldn not have done sth 和might have done
1should not have done 2 could not have done 3 would not have
为什么是not have done和hadn't done ?