as什么情况下可以做主语？

as…as possible 能做主语吗？~

不能。As + 形容词或副词 + as possibe,意思是"尽可能……的"。as ... as是用于比较句型,中间插入的是形容词或副词的原级。意思是"达到与什么相同的程度"。例如:We have to run as fast as possible.
as…… as possible的常见短语搭配：
1、as soon as possible
一......就......
例句：
'll call you as soon as possibleI finish my homework.
我一完成我的作业,就给你打电话。
2、as long as possible
长达......之久；只要......
例句：
She has searched the information about dinosaurs on the Internet as long as possible three hours. 她在因特网上搜索有关恐龙的信息已经长达三个小时。
3、as much /manyas possible
高达......,多达……
Please give the children as much as possible love.请给这些孩子尽可能多的爱。
从句子中看as…as possible都是用在句子中作比较状语的。”

当然可以，你只需记住：as和 which除了这几点，用法完全一样
1，as 能放在定语从句句首
2。as和固定用法搭配： as you know........

貌似没见过

as
[As]
adv.
同样地, 被看作, 象
prep.
当做
conj.
与...一样, 当...之时, 象, 因为
[域] American Samoa, 东萨摩亚
abbr.
[军] Air to Surface, 空对地

As
symb 〈化〉砷 (arsenic)

AS
=Academy of Science科学院

as
as 1
AHD:[²z] […z ] 非重读时
D.J.[#z][*z ]非重读时
K.K.[#z][*z ]非重读时
adv.（副词）
To the same extent or degree; equally:
同等地，一样地：同一限度或程度地；同等地：
The child sang as sweetly as a nightingale.
这孩子歌唱得同夜莺般婉转
For instance:
例如：
large carnivores, as the bear or lion.
大的食肉动物，如熊或狮子
When taken into consideration in a specified relation or form:
被认为：当在特别的关系或形式中加以考虑时：
this definition as distinguished from the second one.
这个定义与第二个有区别
conj.（连接词）
To the same degree or quantity that. Often used as a correlative after so or as :
像，如同：同等的程度或量，常用作关联词后置于so 或 as ：
You are as sweet as sugar. The situation is not so bad as you suggest.
你甜如蜜。情形不如你说的那样糟
In the same manner or way that:
以同样方式，以同样方法：
Think as I think.
像我这样去想
At the same time that; while:
同时；当…时：
slipped on the ice as I ran home.
我跑回家时在冰上滑了一跤
For the reason that; because:
由于；因为：
went to bed early, as I was exhausted.
睡得早，因为我精疲力尽了
With the result that:
结果：
He was so foolish as to lie.
他太傻才会撒谎
Though:
尽管：
Great as the author was, he proved a bad model. Ridiculous as it seems, the tale is true.
这位作者尽管了不起，到头来却成了一个坏榜样。这个故事看似荒唐，却是真的
In accordance with which or with the way in which:
根据或按照这一方法：
The hotel is quite comfortable as such establishments go. The sun is hot, as everyone knows.
就设备而言，这个旅馆相当舒适。太阳非常热，这一点众所周知
Informal That:
【非正式用语】 相当于that：
I don't know as I can answer your question.
我不知道能否回答你的问题
pron.（代词）
That; which; who. Used after same or such :
that；which；who。用在same 或 such 后：
I received the same grade as you did.
我和你得分一样
Chiefly Upper Southern U.S. Who, whom, which, or that:
【多用于美国中南部】 who，whom，which或that：
Those as want to can come with me.
想去的可以和我同去
prep.（介词）
In the role, capacity, or function of:
以…的身份，作为：充当角色、身份或功能的：
acting as a mediator.
充当调解人
In a manner similar to; the same as:
以相似的方式；如同：
On this issue they thought as one.
在这个问题上，他们意见一致

as is【非正式用语】
Just the way it is, with no changes or modifications:
按现状：就用这种方式，不加改变或修饰：
bought the samovar as is from an antique dealer.
原封不动地从古董商那里买到这套俄国式茶具
as it were
In a manner of speaking; as if such were so.
以说的方式；似乎如此

Middle English
中古英语
from Old English ealsw³} * see also
源自 古英语 ealsw³} *参见 also

Traditionally, a distinction has been drawn between comparisons using as . . . as and comparisons using so . . . as. [x] The so . . . as construction is traditionally required in negative sentences ( as in Shakespeare's “ 'tis not so deep as a well” ), in questions (as in Is it so bad as she says? ), and in certain if clauses (as in If it is so bad as you say, you ought to leave ). But this so . . . as construction is becoming increasingly rare in American English, and the use of as . . . as is now entirely acceptable in all contexts. · In a comparison involving both as . . . as and than, [x] the second as should be retained in written style. One writes He is as smart as, or smarter than, his brother, not He is as smart or smarter than his brother, which is considered unacceptable in formal style. · In many dialects, as is used in place of that in sentences like We are not sure as we want to go or It's not certain as he left. [x] This construction is not sufficiently well established to be used in writing. · [x]As should be preceded by a comma when it expresses a causal relation, as in She won't be coming, as we didn't invite her. [x] When used to express a time relation, as is not preceded by a comma:
按传统用法，用as…as 表比较和用 so…as 表比较二者有别。 so…as 结构传统上用于否定句，（ 如莎士比亚“不如井深” ）， 和疑问句中（如在如她所说的那样糟糕吗? ）， 和某些if 从句中（如在 如果象你所说的那样糟，你就该离开 ）。 但so…as 结构在美国英语中日趋少见， 而在所有语境中使用as…as 现在则是完全可以接受的。 在有as…as 和 than 同时用作比较时， 在书面语中，第二个as 应该保留。 一种写法He is as smart as，or smarter than，his brother，（他如他兄弟一般聪明，甚至超过他了） ，而不应写成 He is as smart or smarter than his brother， 这在正式文件中被认为是不可接受的。在很多方言中，用as 代替 that 如 We are not sure as we want to go 或 It's not certain as he left 。 这种结构在书面语中尚不成立。当as 表示一个因果关系时，前面应有逗号， 如She won't be coming, as we didn't invite her。（她不会来这里，因为我们没有邀请她） 。 当用于表示时间关系时，as 前没有逗号：
She was finishing the painting as I walked into the room.[x]
She was finishing the painting as I walked into the room（我走进房间的时候她刚好画完画）。
When a clause introduced by as begins a sentence, care should be taken that it is clear whether as is used to mean “because” or “at the same time as.” The sentence As they were leaving, I walked to the door may mean either that I walked to the door because they left or at the same time that they were leaving. · As is sometimes used superfluously to introduce the complements of verbs like consider, deem, and account, [x] as in They considered it as one of the landmark decisions of the civil rights movement. The measure was deemed as unnecessary.[x] This usage may have arisen by analogy to regard and esteem, [x] where as is standardly used in this way:
当as 引导一个从句且位于句首时，应注意弄清 as 是表示“原因”还是表示“与…同时”。 句子As they were leaving，I walked to the door 既可表示我向门口走去，因为他们离开了，也可表示在他们离开的时候，我向门口走去。 as 有时赘用，引导动词的补助成分诸如 consider,deem， 和 account， 。 如在他们将此认为是民权运动的里程碑。 认为此测量标准不必要。 这种用法也许源于词的类比用法regard 和 esteem ， 在此as 这种形式的用法是标准的：
We regarded her as the best writer among us.[x]
我们认为她是我们中最好的作家。
But the use of as with verbs like consider is not sufficiently well established to be acceptable in writing. See Usage Note at because, equal, like 2so 1than
但在书面语中as 与动词连用象 consider 等尚不能完全被人们接受。 参见 because， equal， like2so1than

American dialects often vary from Standard English in the form and usage of relative pronouns. Where Standard English has three relative pronouns—who, which, and that —regional dialects, particularly those of the South and Midlands, allow as and what as relative pronouns: “Them as thinks they can whup me jest come ahead” (Publication of the American Dialect Society). The car what hit him never stopped.
美国的各种方言在关系代词的形式和用法上常与标准英语有出入。标准英语有三个关联代词who,which 和 that ——地区性方言， 尤其是南部和中部地区，却允许as 和 what 作关联代词： “Them as thinks they can whup me jest come ahead" （美国方言协会出版物）撞倒他的那辆车根本没停。

as
as 2
AHD:[²s]
D.J.[#s]
K.K.[#s]
n.（名词）
【复数】 as.ses[²s“¶z”, ²s“¹z]
An ancient Roman coin of copper or copper alloy.
阿斯：古罗马一种铜硬币或铜合金硬币
An ancient Roman unit o

同学，as 貌似不是名词，怎么会问这么奇怪的问题

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木兰县13657258381： as 做什么成分 - ？
黎劳一清： as在引导定语从句时,既可以引导限制性定语从句,也可以引导非限制性定语重句.在两种情况下都可以分别充当主语,宾语和表语. 1)非限制性定语从句做主语:As is known commenly, grammer is over valued in education. 【众所周知,在教育...

木兰县13657258381： 关系代词什么时候在句子中做主语呢? - ？
黎劳一清：[答案] who ,whom , whose , which , that ,as 一般在从句中作主语,宾语,表语都行.你看句子来判断,一个句子无非主谓宾,学语法不要那么死板.

木兰县13657258381： 举一个as做主语的句子括号,不要从句? - ？
黎劳一清： 1. 关系代词as用于引导限制性定语从句,主要与such, as, the same连用,其意为“像……的”“凡是……的”“……一类的人(物)”.如:He's not such a fool as he looks. 他并不像看上去的那样愚蠢.He is not such a man as would leave ...

木兰县13657258381： 在定语从句中as可以做主语吗 - ？
黎劳一清： 可以,特别是非限定性定语从句.如:(1)As is known to all, China is a developing country. (2) He is from the south, as we can see from his accent. (3) John, as you know, is a famous writer.

木兰县13657258381： as 引导定语从句 成份 as 在从句中可以作主语,宾语,状语么? 若是可... - ？
黎劳一清： as 引导定语从句,as必须在从句中做主语或宾语,不能做状语.其位置即可放句首,也可放句中.如:As we know,China is a developing country=China is a developing country,as we know.

木兰县13657258381： as在定语从句中做主语时.从句位于通常要有be或别的系动词,但which不受限制.谁可以举几个例子 - ？
黎劳一清： as做主语时后常有be ,但是which是绝对不可以的.which后可以是肯定句也可是否定句,但as后只能是肯定句.这两种情况见下例.as is known to us all, the earth is round.as is the case, he is always the last to arrive.he came late again, which didn't surprise us .he passed the exam ,which made his parents happy.

木兰县13657258381： as引导的定语从句as只能指代整句话是吧??? - ？
黎劳一清： 你好!很高兴为您解答. 根据您的描述,答案是:否. 您谈及的指代整句话符合以下第二种情况.由as引导的定语从句有以下几种情况: 1) as作关系代词和关系副词引导限定性定语从句,并在句中做主语、表语和状语,构成the same……as, ...

木兰县13657258381： as 在定语从句中 充当 什么角色 主宾表都可以吗? 和whose的区别是什么? 求超级详细的解说 - ？
黎劳一清： whose引导定语从句时,只能在句中作定语.Whose 用来指人或物(只用作定语, 若指物,它还可以同of which互换,指人的时候也可以用of whom 代替) (1) They rushed over to help the man whose car had broken down. 那人车坏了,大家...

木兰县13657258381： 高一英语 as的用法 - ？
黎劳一清： <1>这里as 引导限制性定语从句,指代前面的question.主句中出现such这个修饰先行词,需要用as在做关系代词在定语从句中做主语或者宾语.因此不能省略.因而有了 such…as… 的结构.<2>既然as已经在定语从句中做了宾语,所以不用加...