pay for 是词组吗,如何解释,如果能举几个例句就更好了

是词组．意思有很多种，最普通的一个是买东西付款的意思．

How much did you pay for the book?
I paid 20 yuan for it.

还有指做了某错事，要为该事遭受某种惩罚．

You shouldn't break the vase,you'll pay for what you have done.

He'll have to pay for what he has done.
他将为自己所做的一切付出代价。

是固定搭配。pay some money for sth.
eg:1.I pay fify yuan for the bag.我花了50元买了这个包
2.How much money do you pay for this book？你买这本书花了多少钱？

you get what you pay for