is和are的用法
问题描述:
is和are的用法
what colour's Tom's umbrella?
His umbrella is black.
what colour are your books?
Our books are red.
都是询问颜色的问题,为什么前一句用IS,而后一句用ARE呢?
答
一个物品,单数用is
多个物品,复数用are