spend doing sth.

sb spend + doing sth spend doing sth. spend on sth 等于spend doing sth spend doing sth和spend on sth 有spend.on doing sth spend ...on(in) doing sth ---------------------------------- spend sometime doing sth 语法分析 spend的用法spend 一般不就用在spend on sth 和spend (in) doing sth spend spend doing sth.和 spend on sth.有什么区别? spend on sth 和spend doing sth的意思 1.spend st on doing sth;spend st doing sth;spend st to do st be busy with sth.spend on sth.be busy doing sth.spend doing