1.spend ,主语是人

句型 ：sb.spend +钱/时间 +on +sth

sb.spend +钱/时间 +（ in ）+ doing sth 其中in可以省略

例句：Tom spent two hours on his homework.

2.pay ,主语是人

句型：sb.pay +钱+for sth

例句：I paid 200 yuan for this pair of shoes.

3,cost 主语是物

句型：sth cost sb some money

例句：These books cost me 150 yuan.

4,take 一般由it作形式主语

常用于句型 it takes sb some time/money to do sth.花费某人多少时间/金钱去做某事.

例句：It took me 10 minutes to walk to school from my home.

It took him 20 yuan to buy this book.