1、regret to do 很遗憾地/抱歉地做...(事情还没有做)
I regret to tell you that Mr White has departed from the world for ever.
我遗憾地告诉您怀特先生与世长辞了。
2、regret doing sth.很遗憾/后悔做了...(为已经做过的事而感到...)
I now regret saying what I said.
现在我为自己说过的话感到后悔。
扩展资料
1、There are many things I regret doing to you.
我后悔对你做了许多(不好)的事情。
2、I regret doing that.
我后悔我做的事。
3、I have no regret to do like this.
我毫不后悔这样做了。
4、Don't let oneself regret, to do, do let others repent of.
不要做让自己后悔的事,要做,就做让别人后悔的事。
参考资料:百度百科:英语语法