spend后用什么

spend后用什么
spend后用什么

spend后用什么
spend sometime/some money (in)doing sth
spend sometime/some money on sth

spend on sth.
spend some time (in) doing sth.

spend 后宾语位“某物”时，用介词on；例：Tom spent ten cents on popcorn.
宾语位“做某事“时，则用介词 in,一般in可省略；He does not spend much time on his homework.
He spend his whole life (in) looking after the poor.