I regretted having been so rude to him,这句为什么用having?

问题描述:

I regretted having been so rude to him,这句为什么用having?

regret doing sth对干什么感到后悔
固定用法

因为事情已经发生了所以用动名词的完成形式

regret 已经是动词了 句子里不可能同时出现两个动词
所以have必须变形
而regret doing sth 是后悔这个词的固定用法
所以have 就是以having 的动名词形式出现的~~~

后悔某事,having 动名词

I regretted having been so rude to him
句意:我后悔对他如此粗鲁.
be so rude to him这个动作让我到现在还很后悔,也就是对现在仍有影响,所以用现在完成式 have been so rude to him
regret doing sth后悔做了某事,所以have变成having