before long和long before的区别 两者有何不同

before long和long before的区别：before long 和long before 是意思完全不相同的两个词组。before long是介词短语，意为“不久以后”、“不久”。long before：它单独使用时是副词短语，表示“很久以前”。

before long和long before的区别

1.before long与long before意思不同

(1)before long不久以后

例如：Before long he got married.不久他就结婚了。

I’ll be back before long.不久我就回来。

(2)long before很久以前(单独使用，表示比过去某时早得多的时间)

例如：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。

2.before long与long before用法不同

before long 相当于副词，位于句首或句末。

long before 其中，before可以为连词，因此可以引导时间状语从句。

before long造句

1、Before long she had been called upon to undertake another journey.

不久以后，她将被号召做另一次旅行。

2、Before long you will notice the changes in your life, as that which you ask for manifests.

不久以后，你会注意到你生活中的变化，就像你请求所显现的那样。

3、We'll be home before long.

我们很快就要到家了。

long before造句

1、We have heard about this new type of machine long before.

关于这类新型机器，我们很久以前就听说过。

2、The reference book for teaching came out long before.

教学参考书很久以前就出版了。

3、The area was inhabited long before the dawn of recorded history.

早在有历史记载之前很久这个地区就有人居住了。