regret doing/to do的區別

regret to do　 對要做的事遺憾。　　　　　(未做)

regret doing　 對做過的事遺憾、後悔。　　(已做)

I regret to have to do this, but I have no choice.

我很遺憾必須這樣去做，我實在沒有辦法。

I don't regret telling her what I thought.

我不爲告訴她我的想法而後悔。

典型例題

---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。regret having done sth. 對已發生的事感到遺憾。regret to do sth. 對將要做的事感到遺憾。本題爲對已說的話感到後悔，因此選D。