You have three children,but I have only two ________.

问题描述:

You have three children,but I have only two ________.
A.one B.ones
C./ D.child
选哪个?Why?
为什么不选B

two 已经代表了 two children
我们一般是没有two ones 的说法,在哪里都不会看到这么说的~