spend的主语必须是人,常用于以下结构:(1) spend time /money on sth.在……上花费时间(金钱).例:I spent two hours on this maths problem.这道数学题花了我两个小时.(2) spend time / money (in) doing sth.花费时间(金钱)做某事.例:They spent two years (in) building this bridge.造这座桥花了他们两年时间.(3)spend money for sth.花钱买…….例:His money was spent for books.他的钱用来买书了.
sb. spends some time in doing sth.. 例如:He spent a long time in preparing the exam. sb. spends money in doing sth.. 例如:He spent all his money in buying the house.