it was 3 years before i had graduated from the university 对吗?也就是it is 过去式 before 过去完成时
问题描述：
it was 3 years before i had graduated from the university 对吗?
也就是it is 过去式 before 过去完成时
答
it is/was -+时段+since从句（用一般过去时）
答
It is three years since i graduated from the university . 我已经毕业三年了。
It was three years since i had graduated from the university . 我已经毕业三年了。
答
如果想说“我大学毕业后已经过了三年”,不能用 before,应该改为 since,即 ： it was 3 years (since) I had graduated from the university...
答
was - is
before - ago
这样就是强调句了：It is 3 years ago that I graduated from the university.