regret to do/doing

regret to do/doing regret doing和regret to do的区别 [紧急求助]regret doing sth.与regret to do sth. regret to do 和热regret doing 有什么不同? regret to do sth ,regret doing sth ,regret having done sth有什 问个英语问题,regret to do 与regret doing的区别 Regret to do sth 与Regret doing sth有什么区别? regret not to do sth和regret doing是否可以替换 是不是只有regret not doing sth.而没有regret not to do sth. 有动词关于-todo -doing的用法 如regret to do 后悔要做 regret doing 后悔做了 还有 regret to do 和doing 以及not doing 有什么区别 regert到底怎么用啊 regret+doing sth 和regret to do sth 感觉意思都差不多啊