before long和 long before一些特殊用法,不单单是意思!谢了!

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before long和 long before一些特殊用法,不单单是意思!谢了!
before long和 long before
一些特殊用法,不单单是意思!谢了!

before long和 long before一些特殊用法,不单单是意思!谢了!
1. before long 的意思是“不久,很快”.如:
I’ll be back before long. 不久我就回来.
Before long he got married. 不久他就结婚了.
2. long before有两个用法:
(1) 老早,早就(单独使用,表示比过去某时早得多的时间).如:
She had left long before. 她老早就离开了.
That had happened long before. 那事老早就发生了.
注:long ago 表示“很久以前”, 指的是从现在算起的很久以前,通常与一般过去时连用:
I met him long ago. 我很久以前就认识他了.
(2) 在……的很久以前,在还没有……的很久以前.如:
She had left long before his return [he returned]. 在他回来的很久以前她就走了.
He had worked in the factory long before he got married. 在他还没有结婚的很久以前他就在这家工厂工作了.
注:此时的主句谓语通常用过去完成时,但有时也可用一般过去时(因为 before 已体现了动作的先后关系).如:
This happened long before you were born. 这事在你还没出生以前很久就发生了.
另外注意以下句式
It is [was, will be] long before……在……前需要很久.如:
It was long before he came back. 过了好久他才回来.
It won’t be long before we see each other. 不久我们又会见面的.