I’ll never forget the days___in which__ we worked together.为什么用介词_英语解答

I’ll never forget the days___in which__ we worked together.
为什么用介词in 不用at
有什么区别?

人气：425 ℃　时间：2019-12-09 23:06:52

解答

we worked together in the days
一般情况下
in 后面跟一段时间
at 后面跟一个时间点~