It was two years ago when I got to know him.(改为同义句)

问题描述:

It was two years ago when I got to know him.(改为同义句)
It is two years —— —— —— —— —— him.

since I got to know可以解释一下吗?谢谢。当做固定的句型就可以了哦,谢谢啦~