It was…before…后面用什么时态呢?我记得是用过去完成时,但是有本书上又说是用一般过去时,我就郁闷了

It was…before…后面用什么时态呢?我记得是用过去完成时,但是有本书上又说是用一般过去时,我就郁闷了 It is/has been…since… It was/will be…before… 这两个句It is/has been…since…It was/will be…before…这两个句型怎么用?要用什么时态? 高一英语语法：It was long before 后面是过去时 It will be long高一英语语法：It was long before 后面是过去时It will be long before 后面跟现在时 it will be…before和 it was …before的区别 it was 和it is +before这两个的时态要注意吗it is 3 years before they.和it was 3 years before they.从句主句后面的时态怎么用 It was /will be …before啥意思? 请问it be…before…的句型用法…比如说it was 3 years before he … It would be+时间段+before+什么时态it will be +时间段+before+一般现在？it was +时间段+before+过去完成？ It was Sunday the day before yesterday.什么意思? it was 时间when it was 时间before it was 时间since 这几个句型有什么区别 Six years has passed before I realize it.It was 12 o'clock before I realized it.这两句的区别是什Six years has passed before I realize it.It was 12 o'clock before I realized it.第一句I realize it第二句I realized it.一个用现在时,一 it was the third time i was late this week.it was 后面什么用法? It was many years later_ I had an opportunity TO DO IT again.请问是为什么不用BEFORE而用了THAT?能否顺便提供一下BEFORE和THAT用法的区别?那么BEFORE的用法又是什么>我记得有在IT后面跟上BEFORE的. I happened to be caught in a shower.It __ just a couple of minutes before I__ wet through A.had been;had been B.was;was C.was;had been D.had been;was 为什么 后面要用过去是而不是过去完成完时 it was on the branch before she put her hand up and took it before做什么词? It is…before… 算什么句型?怎么用?怎么翻译? It is…before… 算什么句型?怎么用?怎么翻译? It was for the first time that后面从句用什么时态