spend in 和 spend on 有什么区别

spend in 和 spend on 有什么区别
spend in 和 spend on 有什么区别

spend in 和 spend on 有什么区别
spend in doing in 后面接动名词
spend on sth on 后面接名词或代词
如 i spent an hour in watching TV.
i spent ten yuan on the book/it.

spend in + doing sth
spend on + sth