1.spend 主语只能是人
花(钱),花费[(+on/for)]
I spent $100 on the bike.我花了一百美元买下那辆自行车.
2.cost 主语是it
It must cost a good deal to live here.
住在这里一定要花很多钱的.
3.pay sb.for sth.
You must pay for this book.
你必须要付这本书的钱.
I must remember to pay you for the ticket.
我一定要记住把电影票的钱支付给你.
4.take 主语是it
It takes sb.some money.