初中英语填空题(只需说明理由)

问题描述:

初中英语填空题(只需说明理由)
There are more students in our class than _/_ in theirs
为什么这里不用加ones或that?具体理由
何时需要加 ones或that?举例说明

这里than 连接的比较关系是比较in our class 和in their class 两个地点状语,所以不用加ones或that.
如果题目是There are more students in our class than _____of their’s,就需要加代词了.