how mary regretted( )her boyfriend so rudely though she couldn't bear him smoking in her office.a.being treatedb.to treat c.to have treatedd.having treated
问题描述：
how mary regretted( )her boyfriend so rudely though she couldn't bear him smoking in her office.
a.being treated
b.to treat
c.to have treated
d.having treated
答
D
regret doing sth表示后悔已经做了某事，排除B/C
因为是她忍受不了她男朋友抽烟而吵架，一定是她对男孩不好，所以排除A
答
d
regret to do sth.表遗憾
regret doing sth.表后悔，这里用having treated因为是已经发生的事情
答
D
首先看regret的用法,
regret to do 很遗憾要做某事
regret doing 后悔做了某事
根据时态或句意都可看出是后悔做了某事,所以用ing
排除B,C
由句意应该是,mary粗鲁的对待boyfriend
不是A,mary被粗鲁的对待
译为：虽然玛丽难以忍受男友在她办公室抽烟,但她还是很后悔那么粗鲁的对待他.
答
regret+ing 且被动 选a~