Regret to do sth 与Regret doing sth有什么区别?

Regret to do sth 与Regret doing sth有什么区别? [紧急求助]regret doing sth.与regret to do sth. regret to do sth ,regret doing sth ,regret having done sth有什 是不是只有regret not doing sth.而没有regret not to do sth. regret to do 和热regret doing 有什么不同? regret doing sth 和 regret having done的区别 regret的用法 regret doing sth和regret having diong sth 的区别? regret doing与regret having done有什么区别呢? regret not to do sth和regret doing是否可以替换 regret to have done 与regret doing 有什么区别.肯定有区别 regert到底怎么用啊 regret+doing sth 和regret to do sth 感觉意思都差不多啊 regret doing和regret to do的区别