sometimetodosth,pay,cost,结构sb.spendsomemoneytime(in)doingsth.sth.是某事或某物,take.这四个。其中spend的主语是人.costsb.多少时间或金钱;take一般只考ittakesb./onsth;cost的主语是物,例如Thewatchcostmetwentyyuan.也就是sth.payforsth.. 而pay后面一般加介词for,sb一般有Spend