as的从句用法

Question

如题所述

Answer 1

AS在从句中的用法小结
一.As在各种状语从句中的用法:
1. AS用于时间状语从句中,表示从句动作与主句动作同时发生, “边….边….”,而且主要指一段时间,但有时候和when一样也可指一点时间。
They shouted slogans as they passed the square
2.As用于原因状语从句中,表示的原因语气较弱,其原因多是对方所知道的,他引出的原因状语从句常常置于句首。
As he wasn’t ready in time, we went to the bar without him.
3.AS用于让步状语从句中，常常被转换成一个部分倒装结构，含有强调的意味。
1）Small as (=though) the stars appear, they are really large bodies. 2）Tired as she was, she continued to prepare for her lecture tomorrow. 4.AS引导方式状语从句时，意思是“如同”、“就像”（in the same manner that…..）,可以修饰动作和状态。
例如：Air is to man as water is to fish. 二．AS在定语从句的用法
1.AS引导限制性定语从句时，主要用在“such….as”,”the same…as”的结构中，可倒替先行词是人和物的名词.在“the same…as”的结构中as 也可以用that来代替
1）Let’s discuss only such questions as concern us!(as作主语) 2）I have never seen such kind of people as they are.(as作表语) 3）This is the same scarf as/that I have bought in HK.(as作宾语)
2.AS引导非限制性定语从句时，代替整个主语，对其进行说明。该从句的位置比较灵活，可位于主句前面或者插在主语中间，或者位于主句后面。常常由逗号将其主句隔开。“正如….” “正像….” 1）She is a southener,as(=which) I know her accent.(as代替前述句在从句中作宾语) 2）As was usual with the old man,he went out for a walk with his dog after dinner. (as代替后述句在从句中作主语)
as的用法灵活，词义繁多，特别是在复合句中更能体现其用法的多样性和灵活性，但如果同学们能正确掌握as的高考资源网词性和词义，是不难掌握其用法的。 一、as用作关系代词引导定语从句
1. as 引导非限制性定语从句，一般不指代某个具体的名词或代词，而是代表整个主句或主句的一部分。这种从句可放在主句之前，也可以放在主句之后，有时还可以放在主句的中间。如：
As is reported in the newspapers, talks between the two countries are making progress. 正如在报纸上所报道的，两国间的谈判有所进展。
Grammar is not a set of dead rules, as has been said above. 如上所说，语法不是一套死条文。
Spiders are not insects, as many people think, nor even nearly related to them. 蜘蛛不是昆虫，尽管许多人都这样认为，它甚至与昆虫几乎没有联系。
2. as 引导限制性定语从句，主要用于the same„as（与„„相同），such„as（像„„一样），as„as（与„„一样）。如： She knew he felt just the same as she did. 她知道他的感受和她一样。
Such a man with a good temper as Mr. Li is is easy to get along with. 像李先生这样好脾气的人是容易相处的。
He smokes as expensive a cigarette as he can afford. 他抽一种他买得起的最贵的烟。 二、as作为从属连词引导时间状语从句
表示“当„„的时候”或“一边„„一边”，强调主句的动作和从句的动作同时发生。如： I saw him as he was getting off the bus. 当他下公共汽车的时候我看见了他。 The boy was singing a popular song as he was bicycling. 这男孩边骑车边唱歌。 As she grew older, she became less active. 当她长大一点的时候，就变得不那么活泼了。
三、as作为从属连词引导原因状语从句
as 引导的原因状语从句常放在主句前，表示“因为，由于”。如：
As she is a model teacher, she gives a good example to others. 因为她是一名模范教师，她给其他人树立了一个好的典范。
As he wasn’t ready in time, we went to the cinema without him. 由于他没有及时准备好，我们就去看电影了，没有等他。w.w.w.k.s.5.u.c.o.m
三、as作为从属连词，引导让步状语从句
as引导让步状语从句比较特别，它要求将主语和谓语或谓语的一部分倒装。如： Old as he is, he is still full of energy. 尽管年纪大了，但他依然精力充沛。 Try as she may, she never succeeds. 尽管她很努力，但总是不成功。
Much as I admire Mr. Wang as a poet, I don’t like him as a man. 尽管我喜欢王先生的诗歌，但我不喜欢他的为人。
注：当倒装后置于句首的名词为单数可数名词时，习惯上不带冠词。如： Boy as he was, he was made king. 尽管他还是个孩子，却被立为国王了。 四、与其他词搭配使用构成从属连词引导从句
1. as if / as though。表示“好像，仿佛”，引导表语从句或方式状语从句。如： It looks as if / as though it is going to snow. 看起来要下雪啦。
He looks as if / as though he had seen a ghost. 他的脸色看起来好像他看见了鬼。
He talks as if /as though he knew everything about it. 他说话的口气好像他已经全部都知道了。
2. as [so] long as。“只要”，引导条件状语从句。如：
As [So] long as you can keep away from them, you will be safe. 只要你能远离他们，你就安全了。
I’m happy as long as you are happy. 只要你幸福，我就感到幸福了。 3. as [so] far as。表示“在„„的范围内”，引导限制状语从句。多用于下列结构：as [so] far as I know（据我所知），as [so] far as I can see, as [so] far as I’m concerned（依我看）。如： As [So] far as I know, the couple have been abroad for about five years. 据我所知，这对夫妇已经出国约五年了。
There’s only one thing to be done now, as far as I can see. 依我看。现在只有一件事情要做。
4. as soon as。表示“一„„就”，引导时间状语从句。如：
As soon as he got off the plane, he telephoned her girl friend. 他一下飞机就给他的女朋友打了个电话。w.w.w.k.s.5.u.c.o.m
He started as soon as he received the news. 他一得到消息就出发了。
总之，由于as的用法复杂，同学们在学习时一定要注意比较其在不同句子中的作用，判断其连接的是什么样的从句，多做一些关于相关练习，这样便可掌握其用法了。

Answer 2

"As”可以用作关系代词引导定语从句。
一：as可以代替整个句子或一件事，引导非限制性定语从句，在从句中作主语、宾语或表语，意为“正如……，就像……，据……”；从句位置可置于主句之前或之后，有时也可作为插入语置于句中，一般用逗号和主句隔开。
as的这种用法常见于以下这些结构:as we can see, as can be seen, as we know, as is（well） known,as may be imagined,as often happens,as has been said before,as was mentioned above,as is often the case,as/indeed it is,etc.
多看一些例句:As is well known，great changes have taken place in China.or:Great changes,as is well known,have taken place in China.众所周知，中国发生了巨大的变化。( as在定语从句中作主语。)
This experiment is very simple，as indeed it is.实验非常简单，事实上也确实如此。(as在定语从句中作表语。)
注意：① which在引导非限制性定语从句时，也有和as一样的功能，可以代替整个句子，但which只能用在主句之后。
②在as所引导的非限制性定语从句中，如果运用的是被动语态结构，be动词可以省略；但which没有此用法，be动词不可省。例如:She married him，which was unexpected.＝She married him as（was） unexpected.她嫁给了她，这一点大家都没有料到。（作主语，代替前面的句子；用which时was不可省。）
二 as除了代替整个句子，也可以代替主句中一个特定的词。as在它引导的定语从句（限制性或非限制性）中可以充当主语，宾语和表语；在这种用法中它经常和such, so, the same等词搭配使用；且当先行词中有such, so, the same等词修饰时，关系代词通常必须用as。
例如:1. They were satisfied with this decision，as was agreed beforehand.他们对这个决定都满意，这事先已经经过他们同意了。( as在定语从句中作主语，其先行词是this decision)
2. I never heard such stories as he tells.我从未听过他讲的这类故事。( as在定语从句中作宾语，先行词是such stories.)
3.The place doesn't look the same as it was before liberation.这个地方看上一去和解放前大不一样了。( as在定语从句中作表语，先行词是same)
4.Have you bought the same book as I referred to yesterday?你有没有买我昨天说的那本书啊？( as在定语从句中作宾语，先行词是book)本回答被网友采纳

Answer 3

1、引导限制性定语从句和非限制性定语从句as多与such 或the same连用，可以代替先行词是人或物的名词。as 也可单独使用，引导非限制性定语从句，作用相当于which。As引导的非限制性定语从句的位置

2、as引导的非限制性定语从句位置较灵活，可以位于主句前面．中间或后面，一般用逗号与主句隔开，但which所引导的非限制性定语从句只能放在主句之后。

例如： As is expected, the England team won the football match.

as和which的相同点：

1、as和which都能引导定语从句，并都可以在定语从句中做主语或宾语，代表前面整个句子。例 1 He married her, as / which was natural. 他跟她结婚了，这是很自然的事。

例 2 He is honest, as we can see. 他很诚实， 这一点我们看得出来。(表示人们从日常主观常识, 经验对某一事情的看法、评价,用as为妥。)

2、当非限定性定语从句置于句末时，as和which都可用来引导这个定语从句。

例 3 The number of senior high school students is increasing, as is mentioned above. 

as引导非限定性定语从句，意思是“正如”。此时也可以换用which引导，但意思有别，意思是：“这一点上面提到了”。

本回答被网友采纳

Answer 4

一
.As
在各种状语从句中的用法
:
1.
AS
用于时间状语从句中
,
表示从句动作与主句动作同时发生
,
“
边
…
.
边
…
.
”
,
而
且主要指一段时间
,
但有时候和
when
一样也可指一点时间。
They
shouted
slogans
as
they
passed
the
square
2.As
用于原因状语从句中
,
表示的原因语气较弱
,
其原因多是对方所知道的
,
他引
出的原因状语从句常常置于句首。
As
he
wasn
’
t
ready
in
time,
we
went
to
the
bar
without
him.
3.AS
用于让步状语从句中，常常被转换成一个部分倒装结构，含有强调的意味。
1
）
Small
as
(=though)
the
stars
appear,
they
are
really
large
bodies.
2
）
Tired
as
she
was,
she
continued
to
prepare
for
her
lecture
tomorrow.
4.AS
引导方式状语从句时，
意思是
“如同”
、
“就像”
（
in
the
same
manner
that
…
..
）
,
可以修饰动作和状态。
例如：
Air
is
to
man
as
water
is
to
fish.
二．
AS
在定语从句的用法
1.AS
引导限制性定语从句时，主要用在“
such
…
.as
”
,
”
the
same
…
as
”
的结构中，
可倒替先行词是人和物的名词
.
在“
the
same
…
as
”
的结构中
as
也可以用
that
来代
替
1
）
Let
’
s
discuss
only
such
questions
as
concern
us!(as
作主语
)
2
）
I
have
never
seen
such
kind
of
people
as
they
are.(as
作表语
)
3
）
This
is
the
same
scarf
as/that
I
have
bought
in
HK.(as
作宾语
)
2.AS
引导非限制性定语从句时，代替整个主语，对其进行说明。该从句的位置
比较灵活，
可位于主句前面或者插在主语中间，
或者位于主句后面。
常常由逗号
将其主句隔开。
“正如
…
.
”
“
正像
…
.
”
1
）
She
is
a
southener,as(=which)
I
know
her
accent.(as
代替前述句在从句中作宾语
)
2
）
As
was
usual
with
the
old
man,he
went
out
for
a
walk
with
his
dog
after
dinner.
(as
代替后述句在从句中作主语
)