spend/waste.doing sth.spent on sth./spent .(in) doing sth.

spend ...on(in) doing sth ---------------------------------- spend on sth 等于spend doing sth spend doing sth和spend on sth spend...on(in)doing sth.造句 有spend.on doing sth spend的用法spend 一般不就用在spend on sth 和spend (in) doing sth spend spend time （on） doing sth 和spend time （in） doing sth spend time in doing sth和spend time on doing sth的区别 spend doing sth.和 spend on sth.有什么区别? spend on sth 和spend doing sth的意思 sb spend + doing sth spend doing sth.