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.
Tom spent two hours ( in ) doing his homework.
My sister spent 100 dollars on her dress.
My sister spent 100 dollars ( in ) buying her dress.
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.
希望我的回答对你有帮助????
