regret to do :对要做的事遗憾。(未做)
regret doing:对做过的事遗憾、后悔。(已做)
例句:
I regret to have to do this, but I have no choice.
我很遗憾必须这样去做,我实在没有办法。
I don't regret telling her what I thought.
我不为告诉她我的想法而后悔。
例题:
-You were brave enough to raise objections at the meeting.
-Well, now I regret ___ that.
A. to do;B. to be doing;C.to have done;D.having done;
答案:D。
解析:regret having done sth. 对已发生的事感到遗憾。regret to do sth. 对将要做的事感到遗憾。本题为对已说的话感到后悔,因此选D。