spend.on doing sth中on能不能去掉?

spend.on doing sth中on能不能去掉? 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 doing sth.和 spend on sth.有什么区别? spend on sth 和spend doing sth的意思 spend...on(in)doing sth.造句 spend st/sm on doing sth 造句 spend的用法spend 一般不就用在spend on sth 和spend (in) doing sth spend 英语基本句式中spend some money on sth.和spend some money in doing st 1.spend st on doing sth;spend st doing sth;spend st to do st