regret to do 表示"因要做某事而遺憾",如 I regret to break your window. regret doing 表示"后悔做了某事", 如 I regret having broken your window.Regret for regret at REGRET FOR 主要是對(duì)自己的過(guò)失感到遺憾或后悔。后接名詞或WHAT從句。 He expressed regret for what he had done. Regret at 表示對(duì)別人的行為感到遺憾，喉結(jié)名詞或動(dòng)名詞 we feel regret at her absence. to our regret 抱歉 much to our regret 非常抱歉 much to one's regret 非常抱歉 we regret to say 我們遺憾地說(shuō) whom we love best , to them we can say lest 最是肺腑情; 不言人亦明; 對(duì)愛(ài)之最深的人; 無(wú)須把愛(ài)掛嘴邊.... to send one's regrets婉言辭謝regret to say 遺憾地說(shuō) to one's regret 。