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before(before后面动词什么形式)
主句,表示,时间before(before后面动词什么形式)
发布时间：2020-12-06加入收藏来源：互联网点击：
很多朋友想了解关于before的一些资料信息，下面是小编整理的与before相关的内容分享给大家，一起来看看吧。
before 英 [bɪ'fɔː(r)] 美 [bɪ'fɔːr]
conj. 在 ... 以前
pref. 在 ... 以前；在..前面
adv. 以前；以往；之前
介词
1、在…以前
before lunch
午餐前
the day before yesterday
前天
He arrived before me.
他比我先到。
Something ought to have been done before now.
先前就该采取措施了。
We'll know before long (= soon) .
我们很快就会知道了。
It happened before long. 不久就发生了。
It happened long before. 很久以前就已发生了。
注意：long before
很久以前 very long ago
We've seen that film film long before.我们早就看过那部电影了。
2、在…面前（或前面）（与behind相对）
They knelt before the throne.
他们跪在御座前。
Before you is a list of the points we have to discuss.
放在你面前的是一份我们要讨论的要点清单。
3、（次序或排列）在前面
Your name is before mine on the list.
名单上你的名字在我之前。
He puts his work before everything.
他一切以工作为重。
4、（表示面临或临近）
The task before us is a daunting one.
我们面临的任务令人胆怯。
The whole summer lay before me.
整个夏季正等待着我。
5、当面
He was brought before the judge.
他被带上法庭。
She said it before witnesses.
她当着证人的面讲出这事。
They had the advantage of playing before their home crowd.
他们有在主场观众面前比赛的优势。
6、（表示面对某人、某事时的反应）
They retreated before the enemy.
面对敌人，他们撤退了。
连词
1. 表示“在…..之前就…..”。
Mary had finished her homework before her mother returned.
玛丽在妈妈回来之前就完成了作业。
Do it before you forget.
尽早动手，免得忘了。
Did she leave a message before she went?
她走之前留言了吗？
2. 表示“过了多久后才…….. ，动作进行到什么程度才……”
The man almost knocked me down before he saw me .
那人差点把我撞倒了才看见我。
They walked about 30 miles to the west before they saw a village .
他们向西走了大约30英里才看见一个村庄。
They worked day and night about three days before everything returned to normal .
他们日夜工作大约三天后才一切恢复正常。
3. 表示“来不及； 尚未…..就…”
Before I could get in a word , he had measured me .
我还没来得及插话，他已经给我量好了尺寸。
He ran off before I could stop him .
我还没来得及阻止他，他就跑掉了。
She left the company before I could have a word with her .
我还没来得及跟她说句话，她就离开了公司。
4. 表示“刚…就…”before还可用于barely〔scarcely〕...before结构，意为“刚…就…”
hardly…when(before)…”和“scarcely…when(before)…”这两个结构在含义上与as soon as及no sooner…than相近,都作“一……就……”解。hardly(scarcely)引出主句,when(before)引出从句,主句的动作与从句的动作一前一后紧接着发生。有人主张主句的谓语动词要用过去完成时,从句用一般过去时。
"hardly…When(before)…”和“Scarcely…when(before)…”这两个结构在含义上与as soon as及no Sooner…than相近,都作“一……就……”解。hardly(scarcely)引出主句,when(before)引出从句,主句的动作与从句的动作一前一后紧接着发生。有人主张主句的谓语动词要用过去完成
I had barely come in before the telephone rang.我刚进来,电话就响了。
Barely had she sat down before the play began.她刚坐下,戏就开始了。
We had scarcely left the house,before it began to rain.我们刚刚离家，天就下起雨来。
Scarcely has a foreigner set foot in the United States before they ask him what he thinks of the country. 外国人刚去美国，他们就会问他对该国有什么看法。
Scarcely had they settled themselves in their seats in the theatre the curtain went up.
他们几乎没坐在剧院的座位上，窗帘就竖起来了。
I had hardly sat down before the bell rang.我一坐下来铃声就响了。
5. 表示“不知不觉就…..； 还没弄清就……”
Time passed quickly and three months went by before Aqiao knew it.
时间过得很快，等Aqiao意识时间的时候不知不觉三个月过去了。
6. 表示“宁愿…，决不…，与其…，毋宁….”常与will 或would 连用。
（宁可…而）不愿
相当于rather than
I'd die before I apologized!
我宁愿也不道歉！
I would die before I would tell
我宁愿也不愿告诉别人
I’d shoot myself before I apologized to him.
我宁愿开枪也不会向他道歉。
I would / will die before I surrender .
我宁愿也不投降。
He'd sit alone in the dark before he'd watch TV.他宁愿一个人在黑暗里坐着也不看电视。
We must stop and rest before going any farther.我们必须停下来休息一下再向前走。
7. 表示“否则；以免”
Do it now before you forget . 现在就行动吧免得忘记了。
I will write it down before I forget it .我马上下来以免忘记了。
Put that away before it gets broken.
把它收好，免得砸碎了。
8. 用于句型“it was +时间段+ before …” 表示 “过了多久才…”相当于until
It may be many years before the situation improves.
这种状况或许要过很多年才能得到改善。
It was some time before I realized the truth.
过了很长一段时间我才悟出真相。
It was three days before he came back. .
before, till, until这三个词均可表示“在…之前”“直到”。
1).在否定句中, before和till或until可以互换,但前者强调句中动作在其宾语所指时间之前的进展情况,而后者则强调句中动作在其宾语所指时间之后的转变情况。
2).在肯定句中, before强调句中动作在其宾语所指时间之前已经完成或强调句中状态在其宾语所指时间之前持续的情况,因而句中可以用持续动词或瞬间动词; till和until则强调句中动词所表示状态在其宾语所指时间之后的结束或转变情况。
9. 用于句型 “ it was not long +时间段+ before …” 意为“不久就….”
It was not long before he sensed the danger of the position .
不久他就意识到了这个职位的危险。
It will be not long before you find you are wrong .
过不了多久你就会发现你错了。
10. 用于句型“it will be(not )+时间段+ before….”表示“要过多久/ 不久…才…”
It will be half a year before you graduate from this school .
要过半年你才能从这所学校毕业。
副词 以前；以往；过去
I've been here before...
我以前来过这儿。
11. 词汇搭配
动词+～
appear before 在(某时)之前出现;出庭
carry before 迅速获胜,势如破竹
come before 在…之上,比…重要;被交由…处理；被提交…考虑
complain before 控诉
go before 出现在某人面前；送于…讨论；先于；早于
lay before 提出
set before 把…放在…前面；认为…比…更重要；把…提交…考虑
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