简明英汉词典

why
[(h)wai]
adv.
为什么, ...的(理由)
int.
(表吃惊, 满意等)哎呀!什么?

基本词义

Why
的问句时, 只能用because不能用for。再者, for不能跟

美国传统词典[双解]

why
why
AHD:[hwo, wo]
D.J.[hwai, wai]
K.K.[hwa!, wa!]
adv.(副词)
For what purpose, reason, or cause; with what intention, justification, or motive:
为什么:为什么目的、原因或起源;以什么目标、借口或动机:
Why is the door shut? Why do birds sing?
门为什么关了?鸟为什么唱歌?
conj.(连接词)

(1)

The reason, cause, or purpose for which:
为…的原因、起因或目的:
I know why you left.
我知道你离开的原因

(2)

Usage Problem On account of which; for which:
【用法疑难】 因为,为什么:
“The reason why [regular verbs] are called regular is that we can predict what all the other three forms are” (Randolph Quirk)
[规则动词] 之所以称为规则是因为我们能够预知动词另三种形式的变化” (伦道夫·夸克)
n.(名词)
【复数】 whys

(1)

The cause or intention underlying a given action or situation:
原因,动机:在一特点行为或情况下隐藏的起因或目的:
studying the whys of antisocial behavior.
研究反社会行为的原因

(2)

A difficult problem or question.
难题,令人费解的问题
interj.(感叹词)
Used to express mild surprise, indignation, or impatience.
用于表示轻微的吃惊、生气或不耐烦

语源

(1)

Middle English
中古英语

(2)

from Old English hwt} * see k wo-
源自 古英语 hwt} *参见 k wo-

用法
Many critics have held that why is redundant in the expression the reason why, as in The reason why he accepted the nomination is not clear. It is true that why could be eliminated from such examples with no loss to the sense, but the construction has been used by reputable English writers since the Renaissance.See Usage Note at where
许多批评家认为在the reason why 这种表达中, why 是多余的, 如在句子The reason why he accepted the nomination is mot clear.(他接受提名的原因不太明确。) why 可以从这种例子中除去,对句子意义并不影响, 但是自从文艺复兴以来这种结构已为颇有名望的英语作家的广泛应用参见 where

现代英汉词典

why
[waI; (?@) hwaI]
adv.
为什么
They ask, 'Why did it happen? What should we do about it?'
大家问,'为什么会发生这样的事?我们该怎么办?
Why did you do it?
你为什么这样做?
Why don't we come more often?'
咱们干吗不经常不这里呢?'
I can't tell you why she is crying.
我不能告诉你她为什么哭。

词性变化

why
conj.
为什么;…的理由
Do you know why he was late?
你知道他为什么迟到吗?
Geoffrey asked her why she was not amused.
杰弗里问她为什么不喜欢他的讲演。
That is why stone walls are used instead of fences around New England fields.
这就是为什么在新英格兰用石头墙而不用栅栏的原因。

现代英汉综合大辞典

why
[(h)wai]
adv.

(1)

[疑问副词]为什么

(2)

[连接副词, 关系副词]...的原因[理由]
W-did he go?
他为什么去?
W-did you write to him?
你为什么给他写信?
Do you know why he was late?
你知道他为什么迟到吗?
That's the reason why I wrote to him.
那就是我写信给他的原因。
That is (the reason) why he raised the question.
这就是他所以提出问题的原因。

词性变化

why
[(h)wai]
n.
(pl. whys)

(1)

原因, 理由

(2)

难解的问题
all the great whys of life
一切难解的人生问题
I cannot explain why.
我说不出理由。
Tell me all the whys and wherefores.
把所有的理由和原因都告诉我

why
[(h)wai]
int.
[表示惊奇, 怀疑, 异议, 承认, 发现, 停顿, 思考等的感叹词]
Why, it's nearly nine o'clock.
啊, 快要九点了。
Why, even a child knows that!
哎呀, 这连小孩都知道!
Why, of course, I'll do it.
噢, 当然罗, 我要做的。
Why, yes, I will if you wish.
嗯! 当然, 如果你希望这样, 我就去做。

习惯用语

Every why has a [its] wherefore.
[谚]凡事均有因; 有理由必有原因。

go into the whys and wherefores(=have the why and the wherefore)
追根究底

Why so?
为什么这样? 有什么根据?

Why, so!
[古]就这样吧! 好吧!

whys and wherefores(=whyand wherefore)
理由, 原因

Why=What have you?
你有什么(东西出售)?(商业用语)

基本词义

for
[fC:; fE]
prep.

(1)

[表示目的]为了
struggle for existence
生存竞争
go out for a walk
出去散步

(2)

[表示目标、去向]向, 往
leave for Shanghai
动身去上海
the train for Dalian
开往大连的火车
passengers for Beijing
去北京的旅客
He is getting on for sixty.
他快到六十岁了。

(3)

[表示对象、用途等]为, 对于; 适于; 供; 属于...的; 给...的
books for children
儿童图书
an instrument for measuring pressure
测压力用的仪器
Not For Sale
非卖品(常用于商品标签)
That will be bad for your health.
那将有损于你的健康。
A letter for you!
你的信!

(4)

[表示愿望、爱好、特长等]对于, 倾向于
long for freedom
渴望自由
have a liking for music
爱好音乐
an eye for beauty
审美的眼光

(5)

[表示理由、原因]由于, 因为
jump for joy
高兴得跳起来
a city famous for its beauty
一个以美丽而著称的城市

(6)

代, 替; 代表
teach for sb.
为某人代课

(7)

[表示时间、距离、数量等]达, 计
The meeting lasted
(for) hours. 会议继续了几个小时。

(8)

[表示赞成, 支持]拥护, 有利于
vote for sb.
投某人的票
They are all for him.
他们都拥护他。

(9)

[表示让步] 虽然, 尽管
For all your explantions, I understand no better than before.
尽管你作了解释, 我还是不懂。

(10)

至于, 说到, 就...而言
for my part
至于我, 讲到我
He is tall for his age.
就他的年龄而言, 他是个高个子。
So much for today.
今天就讲[做]这么多。

(11)

[表示等价、报酬、 赔偿或比例关系] 交换
sell for a dollar
以一美元卖掉
answer point for point
逐点答复
translate word for word
逐字翻译

(12)

[表示约定的时间]
an appointment forSaturday
星期六的约会

(13)

[表示身分]看作, 当作, 作为
take sb. for a fool
把某人看成傻瓜
give sth. up for lost
认定某物已丢失而不找寻
It was built for a pleasure boat.
这条船是作为游艇建造的。

(14)

[用于插入语, 表示列举]
Many people want to buy it because, for one thing , the price is low.
许多人想买它, 原因之一就是价格便宜。

(15)

[与名词或代词连用, 后接动词不定式, 构成名词短语]
make way for the car to pass
给汽车让路
It is time for him to go.
他该走了。

词性变化

for
[fC:; fE]
conj.

(1)

因为, 由于
He felt no fear, for he was very brave.
他很勇敢, 毫不畏惧。

(2)

【说明】 for 和 because 在表示“原因”的时候意思基本相同, 一般可以互相代用。

继承用法

Because
多用于表示直接原因, 而

for
[fC:; fE]
可以表示原因又可以用于提出说明, 语气比

because
[bi5kCz, bE5kCz, bi5kEz]
轻得多。

Because
引导的从句一般放在主句后, 有时也可放在主句前, 而

for
[fC:; fE]
引导的句子只能放在后面。另外在回答

Why
的问句时, 只能用because不能用for。再者, for不能跟

not...but
这一结构连用, 例:(正)
I did it not because I liked it but because I had to do it.
(误)
I did it not for I liked it but for I had to do it.

习惯用语

but for
如不是, 如没有

for sb. to
使某人做某事, 应由某人做...

Oh for...
[古诗]但愿有; 要是能有...该多好

用法词典

why
中古英语hwi

[七国语言]英汉公共大词典

why
为什么

美国传统词典

why
why
AHD:[hwo, wo]
D.J.[hwai, wai]
K.K.[hwa!, wa!]
adv.
For what purpose, reason, or cause; with what intention, justification, or motive:
Why is the door shut? Why do birds sing?
conj.

(1)

The reason, cause, or purpose for which:
I know why you left.

(2)

Usage Problem On account of which; for which:
“The reason why [regular verbs] are called regular is that we can predict what all the other three forms are” (Randolph Quirk)
n.
pl. whys

(1)

The cause or intention underlying a given action or situation:
studying the whys of antisocial behavior.

(2)

A difficult problem or question.
interj.
Used to express mild surprise, indignation, or impatience.

语源

(1)

Middle English

(2)

from Old English hwt} * see k wo-

用法
Many critics have held that why is redundant in the expression the reason why, as in The reason why he accepted the nomination is not clear. It is true that why could be eliminated from such examples with no loss to the sense, but the construction has been used by reputable English writers since the Renaissance.See Usage Note at where

英汉化学大词典

why
adv.为什么

英汉计算机大词典

why
adv.为什么

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