cost \ pay \take（花费）用法

spend，cost，take，pay 都可以表示“花费”，但用法却不尽相同。

1)spend的主语必须是人，常用于以下结构：spend time/money on sth. 在……上花费时间(金钱)。如：I spent two hours on this maths problem.这道数学题花了我两个小时。

spend time/money (in) doing sth.花费时间(金钱)做某事。如：They spent two years (in) building this bridge. 造这座桥花了他们两年时间。

spend money for sth. 花钱买……。如：His money was spent for books.他的钱用来买书了。

2)cost的主语是物或某种活动，还可以表示“值”，常见用法如下：

sth. costs (sb.)+金钱，某物花了(某人)多少钱。如：A new computer costs a lot of money.买一台新电脑要花一大笔钱。

(doing) sth. costs (sb.)+时间，某物(做某事)花了(某人)多少时间。如：Remembering these new words cost him a lot of time. 他花了大量时间才记住了这些单词。

3)take后面常跟双宾语，常见用法有以下几种：

It takes sb.+时间+to do sth.做某事花了某人多少时间。如：It took them three years to build this road.他们用了三年时间修完了这条路。doing sth. takes sb. +时间，做某事花了某人多少时间。如：Repairing this car took him the whole afternoon. 他花了一下午修车。

4)pay的基本用法是：

pay(sb.) money for sth. 付钱(给某人)买,如：I have to pay them 20 pounds for this room each