题目内容：

The time that children spend in their one way relationship with TV affect their life.
这里的IN为什么不能用ON来表示
不是有spend on sth&spend in doing sth的搭配吗?

优质解答

这里that children spend in their one way relationship with TV 是定语从句,spend 的宾语是time. in 是连接后面的内容的. 而不是SPEND IN .