cost : 一般是物做主语spend:常见的搭配有 spend sometime (in)doing sth 话费世界做某事,spend sometime with somebody 与某人度过时光take: it takes sb sometime to do sth
take cost spend paytake 一般主语是事物。。。一般是itspend主语是人一般后面跟on sth 或者ving sthpay一般后面跟钱数或者for sthcost主语也是人,