这里的that 可不可以省略?

问题描述:

这里的that 可不可以省略?
The number of the users is 3 times as large as that in the last year.
这里的that能不能省略,为什么,什么情况下可以省?
There were three times as many users as (that)in the last year.
这里为什么没有that?我感觉应该加上

不可以.因为这是固定的三种之一的倍数表达方式.that起到指代作用.一定要写出来.
that在做定语从句的关系代词时若表示的是宾语成分则可以省略.