16.It ____ long before we ____ the result of the experiment.It ____ long before we ____ the result of the experiment.A.will not be,will know B.is ,will know C.will not be ,know D.is ,know,主将从现,那这是什么从句啊?
问题描述：
16.It ____ long before we ____ the result of the experiment.
It ____ long before we ____ the result of the experiment.
A.will not be,will know B.is ,will know C.will not be ,know D.is ,know
,主将从现,那这是什么从句啊?
答
before的诀窍：
否定句翻译成：“就”这句话：过不了多久我们就会知道这个实验的结果。
肯定句翻译成：“才”：He had waited for 3 hours before he met the girl.
答
时间状语从句.不过不是long before(以前很久/很久以前) 而是before long(不久以后/很快)
before引导的时间状语从句
答
时间状语从句
not.before.跟not .until 类似.
答
c
long before是在。。。以前很久
全句是不久我们就能知道实验结果了