The building over there is a library,west of which is a department store.west前为什么不加the
问题描述：
The building over there is a library,west of which is a department store.west前为什么不加the
答
the代表特指,既然前面已经指明了那里有座建筑,是个图书馆.已经有特点了,也就是限定了那座建筑,所以后面不用特指,也就不用加the