I can't play outside in this heat.为何不说I can't play in/at/on outside in this heat.

问题描述:

I can't play outside in this heat.
为何不说I can't play in/at/on outside in this heat.

本句中为副词

嗯,因为outside的意思已经是“在……外面”了,所以前面不用加介词

outside已经表示出地点了
就是一个表示地点的词
而 in、at、on后面+地点名词 才能和outside 同等作用