There are many different kinds of dinosaur and a number of them used to live in China.

问题描述:

There are many different kinds of dinosaur and a number of them used to live in China.
中间的dinosaur 为什么不用复数?

首先,我们可以把kinds of dinosaur看做一个整体“许多种恐龙”,这里的复数形式体现在"kind+s"上而不是dinosaur上,因为这里的dinosaur指的不是一只一只的恐龙,而是恐龙这个概念.其实你自己翻成中文就明白了:(世界上)...