In summer we often swim in that river.

In summer we often swim in that river.

地点状语追答in summer 是时间状语谢谢好评

In summer 时间状语
in that river地点状语
如果顺序改一下会看得更清楚
We often swim in that river in summer.(谁 干什么 何地 何时 )

in that river 地点状语
in summer 时间状语
很简单的，一般in/on/at+~名词 都是状语成分，然后你看这个名词是时间类的，还是地点类的等等，就可以区分开了。

地点状语、时间状语。