Sally invited me to her birthday party.It is at her house on saturday.为什么用INVITE的过去式

问题描述:

Sally invited me to her birthday party.It is at her house on saturday.为什么用INVITE的过去式

这是过去式,说明sally 邀请我是在陈述这句话之前的事情,说的是过去的一个事件,所有用过去式