(it is ） four years since we last saw each other.这句话括号里为什么不是there were
问题描述：
(it is ） four years since we last saw each other.这句话括号里为什么不是there were
答
楼上的回答都是错误答案.
It is / It has been +时间 since 过去式
是距离上次做什么事有多少时间了的一个固定句型
There be多用来描述客观存在的事物,而不用来描述时间间隔的长短.
牢记