regret to do 對(duì)將要做的事遺憾，regret doing 對(duì)做過的事遺憾、后悔。例如：
I regret to have to do this， but I have no choice. 我很遺憾必須這樣去做，我實(shí)在沒有辦法。
I don't regret telling her what I thought. 我不為告訴她我的想法而后悔。
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(duì)已發(fā)生的事感到遺憾。regret to do sth. 對(duì)將要做的事感到遺憾。本題為對(duì)已說的話感到后悔，因此選D.
I regret to have to do this， but I have no choice. 我很遺憾必須這樣去做，我實(shí)在沒有辦法。
I don't regret telling her what I thought. 我不為告訴她我的想法而后悔。
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(duì)已發(fā)生的事感到遺憾。regret to do sth. 對(duì)將要做的事感到遺憾。本題為對(duì)已說的話感到后悔，因此選D.