regret的用法

1.regret ding sth/that:对某事感到懊悔,遗憾 I regret that you see it like that. I believe you will regret leaving Paris. 3.regret to do sth.that为要做的事抱歉,遗憾 I regret to say that I am unable regret to have done将来完成时regret having done:为做过的事感到后悔，抱歉