between the two hills a deep river

题目

between the two hills a deep river
为什么hills与a deep river 中间用is

答案

Between the two hills【is】 a deep river.
表位置关系的介词短语置于句首时,用倒装语序,主语是a deep river,单数,所以谓语是is
正常语序是：
A deep river 【is】between the two hills.