Question

it was是什么时态

Answer 1

It was+时间段+since 从句时态用过去完成时，意思是(到过去某个时间为止)做某事有多长时间了。例句：
It was 11 years since we had started school. 我们上学已经11年了。

扩展资料

　　过去完成时常用的时间状语有：

　　1. by the end of last+时间段. By the end of last term, we had learned 5000 new words.

　　到上学期末，我们已经学了5000个新词。

　　2. By the time sb. +动词过去式如： The bus had already left by the time I got there.

　　我到那儿时，公共汽车已经开走了。

　　3.By (the time of)+时间段

　　By the time of last year ,we had built two bridges.

　　到去年为止，我们已经建了两座桥。