Anybody can afford our prices.中price为什么要加S?为什么what's the price of these books?又用单数呢?

问题描述:

Anybody can afford our prices.中price为什么要加S?
为什么what's the price of these books?又用单数呢?

原句中不只一种商品价格不同
第二句意思是这些书一共多少钱.