spend 花费 →其主语通常为人，既可指花费时间，也可花费金钱，结构为：
sb. spend ... (in) doing sth. 某人花费...... 做某事
sb. spend ... on sth. 某人花费......在某事/物上
You shouldn’t spend too much time on computer games.你不应该花费太多时间在电脑游戏上
=You shouldn’t spend too much time (in) playing computer games.
Every student spends two hours (in) doing his homework every day.每个学生每天花两小时做作业。
=Every student spends two hours on his homework every day
Tom spent ten dollars buying the shoes.汤姆花了10美元买这双鞋=Tom spent ten dollars on the shoes.
take 花费→其主语通常是形式主语it，常指花费时间。结构为：
It take sb time to do sth.花费某人时间做某事(/ 某人花费时间做某事/ 做某事花费某人时间)
It takes me one hour to read English every day. 我每天花一小时读英语。
It took us three months to complete the book. 我们花了三个月完成了这本书。
It will take them a few days to get there by bus.他们乘公共汽车将花费几天到达那里。
How long does it take to go there by plane?乘坐飞机去那里要花多长时间？
cost 花费→ 其主语通常为事/ 物，结构为：
sth. cost (sb. ) money 某事/物花费(某人)钱。
The pen cost me ten yuan.我花了十元钱买这支笔。
The book cost twenty yuan. 这本书花费了二十元。
It costs each student one dollar to buy a ticket. 每个学生花一美元买一张票。
It costs 100 yuan to get to Mount Tai by train.乘坐火车到泰山要花100元。
How much does it cost to get to Mount Tai by train?乘坐火车到泰山要花多少钱？
pay 花费，支付，付钱 → 其主语通常为人，结构为：
sb. pay money for sth. 某人花费多少钱买某物 （/某人为了某物花费了钱）
She paid 350 yuan for the new watch.她花了350元买这块新表。
sb. pay for sth. 某人花钱买某物 (/某人支付了某物的钱)
I paid for a beautiful dress yesterday. 昨天我花钱买了一条连衣裙。
He has trouble in paying for the car.他有困难购买这部车。
The old man has paid for the education of poor students like Minmin.
这位老人已经为像敏敏这样的贫困学生支付了学费。
