Question

英语问题求解

before这个词是不是一般都是跟完成时呢？
She _____ (never be) to the king's Palace before.
能否详细解释下 before的用法呢？ 跪谢

Answer 1

before
[bi5fC:]
adv.
在前, 以前
prep.
在...之前
conj.
在...之前, 与其...宁可

before
be.fore
AHD:[b¹-fôr“, -f½r“]
D.J.[bi6f%8r, -6four]
K.K.[b!6f%r, -6for]
adv.（副词）
Earlier in time:
在此之前：早些时候：
They called me the day before.
前一天他们给我打了电话
In front; ahead.
在…前面；在前头
prep.Abbr. bef.（介词）缩写 bef.
Previous to in time; earlier than.
…之前：在…时间之前；早于…
In front of.
在…前面
In store for; awaiting:
即将发生的；等待着的：
A young person's whole life lies before him.
年轻人的生命展现在他前面
Into or in the presence of:
进入，在…面前：
She asked that the visitor be brought before her.
她要求把访问者带到她的面前来
Under the consideration or jurisdiction of:
在考虑中，在审理中：
The case is now before the court.
这个案子现在已交庭审理
In a position superior to:
地位高于：
The prince is before his brother in the line of succession.
在王位继承权上，这个王子优于他兄弟
conj.（连接词）
In advance of the time when:
在…时间之前：
See me before you leave.
在你离开之前来见我
Rather than; sooner than:
宁可…也不愿；与其…宁可：
I will die before I will betray my country.
我宁可死也不会背叛我的国家

Middle English bifore
中古英语 bifore
from Old English beforan * see per 1
源自 古英语 beforan *参见 per 1

before
[bI5fC:(r)]
conj.
在…时间之前
We had scarcely reach the school before it began to rain.
我们刚到学校天就下雨了。
Before they drive any of the buses, they will have to pass a special test.
然而在驾驶公共汽车前,他们必须通过专门测验。
The children are advised to get home before dark.
大家劝孩子们天黑以前要回家。
The newspaper deliverers have to get up before dawn every day.
送报人每天黎明前就得起床。
We'll finish the work before long.
我们不久就会完成这项工作。
与其…宁可
He'd die of hunger before he would steal
他宁愿饿死也不愿偷窃。

before
prep.
在…前面
He stood before her.
他站在她面前。
较…为先（为早）
the day before yesterday
前天
'I told you yesterday and the day before yesterday,' he shouted,'Mr Lane was defeated in the elections.'
`我昨天告诉过你了,前天告诉过你了,'他嚷起来了,'莱恩先生在大选中被击败了。'

before the mast
在帆船上
before one's time
超前，太早不为人所接受
Darwin was before his time with his ideas.
达尔文思想超越了时代而不能为当代人所接受。

before
adv.
在前
以前
I have seen you before, but I can't remember where.
我以前见过你，但是不记得在哪里了。
They've seen that TV play long before.
他们早就看过那部电视剧了。

before
[bi5fC:]
prep.
[时间]...以前
before nine o'clock
九点以前
the night before last
前晚
the day beforeyesterday
前天
before Christ
[缩写 B.C.]公元前
[位置]在...的前面; 当...面前
He sat just before me.
他就坐在我的前面。
[位次]先于; 高于
A general comes before a colonel.
将官比校官高。
[选择]与其...宁愿
Death before dishonor!
宁死不辱。
She desired no one for husband before him.
她非他不嫁。

before
conj.
在...以前
I must finish this letter before I go home.
我必须在回家以前写完这封信。②与其...毋宁
He will die before he shall disgrace himself.
他宁肯死而决不受侮辱。
before
adv.
[与完成时态或never连用]以前; 从前
long long before
很久很久以前
I have never met him before.
以前我从来没有见过他。
[位置]在前面, 在前头
You walk before and I will follow after.
你在前面走, 我将在后面跟着。
【说明】 before long 与 long before 常易混淆

before long
是“很快，不久”的意思, 可以用于各种时态。例如: I'll see the film before long 我不久就要看这部电影。
long before
是“很久以前”的意思。单独使用, 一般用在过去完成时的句子里。
She said she had seen the film long before.
她说她很久以前就看过这部电影。
before-metioned
adj.
上述的
before-tax
[bI`fR:`tAks]
adj.
未抽税前的
beforeness
n.
先前存在的条件

as before
如前所述

before
be-在…周围、附近+-fore 前面

before
earlierformerlyin advancepreviouslypriorafterbehind

Answer 2

she has never been to the king's palace before.

Before 在英语中是一个比较常用的虚词，它既可作介词或副词用，也可作从属连词用。在近几年的高考试题中常常出现考查其从属连词用法的题目。下面就把其作为从属连词的用法归纳如下：

1. 表示“在…..之前就…..”。

Mary had finished her homework before her mother returned.

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 .

They walked about 30 miles to the west before they saw a village .

They worked day and night about three days before everything returned to normal .

3. 表示“来不及； 尚未…..就…”

Before I could get in a word , he had measured me .

He ran off before I could stop him .

She left the company before I could have a word with her .

4. 表示“刚…就…”

I had hardly sat down before the bell rang.

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.

6. 表示“宁愿…，决不…，与其…，毋宁….”常与will 或would 连用。

I would die before I would tell

I’d shoot myself before I apologized to him.

I would / will die before I surrender .

7. 表示“否则；以免”

Do it now before you forget . I will write it down before I forget it .

8. 用于句型“it was +时间段+ before …” 表示 “过了多久才…”

It was three days before he came back. .

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 .

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 .

It will be not long before you find you are wrong .

[解题过程]
before和ago都能表示在一段时间以前，但是二者的内涵和具体用法有明显的区别：
1. before表示从过去或将来某一时间算起多少时间以前，由于与这一时间状语连用的行为先发生在过去或将来某一时刻之前，因此往往出现在过去完成时态或将来完成时态中。例如：
① I called him up last night， but his mother told me he had left for Wuhan two days before.
② She said that she had married him five years before.
2.如果不具体表明多少时间以前，before意为“从前；以前”，表示从现在开始追溯到过去一段时间，或者主句的谓语动词表示的是经常、反复发生的行为，以副词的形式置于句末，可以用在现在完成时态中。例如：
①I have never been to Beijing before.
②Have you ever seen a tiger before?
③ I often go over the lessons that I have learned a few days before.
注意： before前的时间状语如果是特定的，含义不一样。试比较：
He said he had arrived here a day before. (一天前)
He said he had arrived here the day before. (前一天)
3. ago指的是从现在起到过去时间的某一点的一段时间。这个时间状语常与一般过去时态或过去进行时态连用。例如：
① I graduated from the college twenty years ago.
②I was asked what I was doing a month ago.
4. 表示在某一时间点或事件以前时，只能用before，不用ago。因为这种用法是将before当作介词或连词使用。ago不具有这种功能。例如：
① He will come back before eleven o'clock.
② Where did your brother study before he joined the army?
③ It was hoped that this would be achieved before the year 2006.
5.按语法规则，ago只能与一般过去时连用，但在since three years ago这类短语中能与现在完成时态连用。因为three years ago构成一个名词短语，共同作since的宾格，意为“自从三年前以来”。例如：
① He has been here since three years ago.
② I have taught English in this school since twenty years ago.
6. 含before的从句一般不用将来时态，如果采用“will / would +V.”时，一般被认为是情态或虚拟语气。例如：
I would die before I would confess to it.
7.如果before从句是一般过去时态，所暗示的是过去发生的事，主句则宜用过去完成时，语义偏重于过去某阶段的行为或状况时，还可与一般过去时态连用。例如：
① I had never seen a Red Army man before I arrived in Xi'an.
② They asked me things that happened before the boy was born.
8. 不少的语法书上说，before引导的从句习惯上不与否定的主句连用，要用until。实际上二者都可以，有时在意义上有些区别。试比较：
He didn't arrive until I returned. 直到我回来时他才到达。
He did not arrive before I returned. 在我回来之前他尚未到达。
I didn't manage to do it until you had explained how. 直到你解释了如何干，我才设法完成了那项工作。
I didn't manage to do it before you had explained how. 你解释了如何干之后，我才设法完成了那件工作。
9. before在句中的含义比较灵活，虽然before引导的也是一个时间状语，但译成汉语时却不必死译为“在……以前”。可以采取下面几种译法：（A）译为“……才”；（B）译为“……就”；（C）译为“尚未”、“还没有”、“来不及”、“不要”、“别”；（D）译为“在……的时候还没有”；（E）译为“如果”、“否则”、“免得”；（F）译为“到”、“等到”、“没等……就”；（G）译为“然后”等。例如：
A. It will be five years before we meet again. 要等五年我们才能再见面。
We waited a long time before the train arrived. 我们等了很长时间火车才到达。
B. I hadn't waited long before he came. 我没等多久他就来了。
He had not gone a mile before he felt tired. 还没走一英里路，他就觉得累了。
C. His father died before he was born. 他尚未出世他父亲就去世了。
Catch him before he escapes. 抓住他，别让他跑了。
Take this computer before you change your mind. 买了这台电脑，不要三心二意了。
D. We arrived there before it began to rain. 我们到达那里的时候还没下雨。
E. Go before I call the police. 走吧，否则我叫警察了。
I had better go now before it is too late. 我最好现在就走，免得太迟。
Pigs will fly before he'll be a scientist. 如果他当科学家，猪都会飞了。
F. The crops will die before the rain fall. 等到天下雨，庄稼早枯死了。
Before I could sit down, he offered me a cup of tea. 没等我坐下，他就给我端上一杯茶。
G. I shaved before I went to the party. 我刮了脸，然后去参加宴会。