英语语法——介词的用法
介词:
at用于表示时刻,时间的某一点
They’ll have a meeting at nine in the morning,
on 用于星期、特殊日期(节假日)、有修饰词修饰的早中晚
a. at, on, in He suddenly returned on a rainy night.
in 用于周月年、季节以及泛指的早中晚。
He often go out for a walk in the afternoon