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

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

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

Mary去了鞋店帮她妈妈买了一双鞋子

这句话的意思是玛丽去鞋店买了一双鞋子给她妈妈。括号里缺的是地点，买鞋子当然是去鞋店啊！

Mary去了鞋店帮她妈妈买了一双鞋子