Mary went to a( )to buy a pair of shoes for her mother.为何答案是shoe shop

题目

Mary went to a( )to buy a pair of shoes for her mother.为何答案是shoe shop

答案

买鞋当然去鞋店了.
如果你问为什么不是shoes shop,除了少数名词外,大部分名词作定语修饰另一名词都是用单数