pay for的用法！！

Question

我听辅导班上老师讲解关于pay for的用法时提到：
人 pay 钱 for sth。
但是我看语法书上只提到了：
1.pay for sth
2.pay sb(+钱）
3.pay(sb.) +钱+for sth.
我很压抑啊！ 到底该听谁的？？？？？
请懂英语的老师或大哥大姐们帮我参考下，一定要告诉我正确的！
没把握的话。。。 就别。。。
只有5分... 全部奉献

Answer 1

老师讲的和语法书上说的都是对的，只是你的老师没有把这个单词的用法全部讲解而已。看来，你是一个肯学肯钻的学生。
pay n,v.
n:薪水，薪金。His pay is too low
v:1.He paid 5 yuan for the book.=He spent 5 yuan on the book.
=He spent 5 yuan (in)buying /getting the book.
=The book cost him 5 yuan.他买这本书花了5元钱。
2.He had to pay for the book because he lost it.
他丢失了那本书，不得不赔偿。
3.The boss paid him 50 yuan for the work.
因为这个工作，老板付给他50元。
祝你进步！

Answer 2

这四个都没错呀
eg: I paid 20 dollars for a new suit.
eg: I pay for the new suit.
eg: I paid the shop assistant 20 dollars.
eg: I paid my sister a new skirt for 20 dollars.

Answer 3

sb pay for sth
某人买某物
比如：I pay 20 dollars for a book
She pays 5 dollars for a pen

Answer 4

听语法书