have had done与had have done区别

如题所述

第1个回答 2019-11-06

题中
i'd
have
told
you
是
i
would
have
told
you
不是i
had
have
told
you
根本没这个结构
B中的
i
had
have
known
也是这样错,直接用
i
had
known
(
过去完成时对过去虚拟)
就可以了
C
其实就是
if
i
had
known
把
had
提前的写法
整句话意思就是
如果我知道,我早就告诉你了
这题考了虚拟语气对过去虚拟的语法

相似回答

had+done 与have+done有什么区别答：have done 是现在完成时，表示动作在现在时间之前的完成。had done 是过去完成时，表示动作在过去的一个时间点之前就已经完成了

大家正在搜

have had done怎么用 have done和done should have done have been done have done when there have done have与had区别 has have done have had been