为什么forget doing sth 不用过去式

为什么forget doing sth 不用过去式 forget doing sth怎么用 用forget doing sth造句 forget doing sth 和 forget to do sth的区别 forget to dp sth和forget doing sth 以及remember to do sth remember doing 用 forget doing sth 造句,越多越好 像forget to dosth 和forget doing sth 就不一样 如何分析remember to do sth,和remember doing sth.forget to do sth,和forget doing sth? 请问forget to do sth与forget doing sth 的用法和区别 forget doing sth与 forget to do sth 用法的区别 forget to do sth．与forget doing sth.的区别?如题 forget doing sth和forget to do sth有什么区别? forget to do sth.和forget doing sth.以及frighten 和frightened的区别? dont forget to do sth 与dont forget doing sth有什么区别 dont forget to do sth 与dont forget doing sth有什么区别 比较下面几组短语的不同remember to do sth forget to do sth like to do sthremember doing sth forget doing sth like doing sth help sb do sth help sb doing sth Forget to do sth.ask sb.to do sth.have fun doing sth.woul forget to dp sth和forget doing sth 以及remember to do sth remember doing sth造几个简单的句子