you can buy this book at any bookstore in our city

问题描述:

you can buy this book at any bookstore in our city
any后面的bookstore为什么不是复数的?

这里是肯定句,any表示“任何一个”的意思后面名词用单数
疑问句或否定句中的any做“一些”解时,后面才需接复数名词