关于before的所有用法

Question

如题所述

Answer 1

Before的用法：
一、 before用作连词

1． before用作连词时，意思是“在……之前；还没来得及 …… 就”。例如：

Before she could move, she heard a great noise, which grew to a terrible roar. 她还没来得及动弹，就听见有很响的声音，接着就成了可怕的隆隆轰鸣声。

Before I could say a word, she had stormed out of the room. 不等我说一句话，她就冲出了房间。

Don’t count your chickens before they are hatched. 不要高兴得过早。

2． 用于It + be + 时间段 + before...句型中，意思是“在……之后才……”。例如：

It will be five years before I come back.

我五年后才能回来。

Answer 2

before [bi'fɔ:]
conj.在 ... 以前
pref.在 ... 以前, 在..前面
adv.以前, 以往, 之前
例句:
B comes before C in the alphabet.
B在字母表里排在C之前。
It will be a long time before we finish this dictionary.
我们需要很长的时间才能把这部词典编译完。
He made a statement before the House of Commons.
他在下议院当众发表了一个声明。
讲解:
【语法用法】
Before同ago的比较：表示“早于现在多少时间前”，用ago。
He started five minutes ago.
表示“早于过去某时多少时间前”，通常用before 。
He told me he had seen her a few minutes before.
英美人也有用ago，觉得语气比较生动。
表示“早于将来某时多少时间前”，也用before。
When you call at the shop again this afternoon, you may be told that the book has been sold only a few minutes before.
表示“早于任何某时（不是现在、过去或将来的某时）多少时间前”，仍用before。
He often forgets what he has heard only a few minutes before.
表示“从现在说到以前，不特指若干时间”时，用before。
We (have) met them many times before.
在倒数回以前，表示“一些事情已发生了多久”时，可用before。
When I went back to the town that I had left eight years before, everything was different.

Answer 3

before的用法是什么

Answer 4

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