Question

谁能帮我用Spend money/time on/in doing sth 造句，并说明一下用法

Answer 1

spend in doing　something
或spend in somewhere
在…上花费
I spent a week in Spain this summer.今年夏季我在西班牙度过了一星期.
Don't spend such a lot of time in dressing yourself.别花那么多时间来打扮自己.
He spent much time correcting my grammar.他花了很多时间来改我的语法错误.

spend on something 把…花在…
He doesn't spend much time on his homework.他花在作业上的时间不多.

Answer 2

Jack spent an hour on his homework yesterday.
Jack spent an hour in doing his homework yesterday.
Jack spent an hour doing his homework yesterday.
即on后直接跟名词，如果是动词，就用in+-ing形式，in可以省略。