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as引导的定语从句和状语从句的区别
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区别就是定语从句和状语从句的最大区别
定语从句是缺少成分(逻辑上应该是先行词原本担任的成分)的,所缺的成分由相应的引导词(据先行词而定)补全
状语从句是不缺成分的,它的引导词内容意义大于语法意义(仅仅表达转折、让步等意思而无担任从句成分的语法功能),已经相当于连词
以as为例,as在引导定语从句时相当于代词,一般作主语,而引导状语从句时可是为连词,表原因、让步等等(引导让步必须前置从句成分)
试比较
As
is
known
to
all
(定语从句,as作从句主语)
,
blablabla
As
it
is
known
to
all
(状语从句,从句不缺成分,as可视为连词),
blablabla
as和which引导非限制性定语从句的区别
区别:
1)as可指其前后主句提到的事实或情况,因此引导的非限制性从句位置比较灵活,which可以放在主句前后,也可插入主句之中;而which引导的非限制性从句只能位于主句之后:
As
is
known
to
all,
fish
can’t
live
without
water.
Air,
as
we
know,
is
gas.
2)在非限制性从句中,which后的be动词不可省;as而后的be动词可以省略:
She
told
me
she
won
the
match
,
which
was
a
lie.
The
material
is
elastic,
as
(was)
shown
in
the
figure.
3)
which在非限制性定语从句做主语时可用各类动词做谓语;而在非限制性定语从句做主语时,谓语常用连系动词,如be,
seem,
become等,一般不用其他行为动词:
He
saw
the
girl,
which
delighted
him.
He
didn’t
say
anything
at
the
meeting
,
as/which
seemed
very
strange.
as引导的让步状语从句有几种模式
as可引导让步状语从句,表示“虽然、尽管”,但要用部分倒装结构,形式如下:
1.
形容词
+
as
+
主语
+
系动词。如:
Tired
as
he
is,
he
offers
to
help
me.
尽管他已经很累了,他还是主动提出帮助我。
2.
过去分词
+
as
+
主语
+
系动词。如:
Well-written
as
the
book
is,
the
author
is
not
satisfied
and
prepared
to
revise
it.
尽管这本书写得很好,作者还是不满意并打算修改它。
3.
名词
+
as
+
主语
+
系动词。如:
Student
as
he
is,
he
does
not
study
hard.
他虽然是个学生,却不努力学习。
asas是什么意思网络用语
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1、该结构的意思是“与......一样”。
2、用法一:接形容词或副词的原级,在否定句中,第一个 as 也可换成 so。如:He doesn't study as [so] hard as his brother. 他学习不如他弟弟努力。
3、用法二:表示涉及数量或程度,可用“as much+不可数名词+as”和“as many+可数名词复数+as”。如:He doesn’t pay as much tax as we do / as us. 他没我们交的税款多。
4、用法三:可用(not) nearly, almost, just, nothing like, exactly, not quite, half, one-ten, twice, three times, 30 per cent等修饰,并且这些修饰语必须置于第一个as之前,而不能置于其后。如:This room is twice as large as that one. 这个房间是那个房间的两个大。
扩展资料:
1、 as用作连词引导时间状语从句
as与when,while都是引导时间状语从句的从属连词,含义都是"当……的时候".但它们有区别:用when时,从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生;用while时,从句的动作为一过程,主句动作与从句动作同时进行或在从句动作过程中发生;用as时,主句和从句的动作同时发生,具有延续的含义.例如:It was snowing when he arrived at the construction site.他到达工地时,天正在下雪.
2、 as用作连词引导原因状语从句
as,because,since都可以表示因果关系,连接原因状语从句,含义是"因为,由于",但它们有区别:because表示的语气最强;as一般放在句首,语气较弱,较口语化;since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然".例如:He will succeed because he is in earnest.他一定会成功,因为他很认真.
3、as作连词引导让步状语从句
as与although (或though),however (或no matter how)等都可以引导让步状语从句,含义是"虽然,尽管",但它们有区别:although语气稍正式些,可放在句首,也可放在句中,主句中不能再用but,但可以用yet;as所表示的语气较强,引导的让步状语从句用倒装语序;however引导让步状语从句时,它的后面可跟形容词或副词,也要用倒装语序.例如:Although he is quite old, he still jogs every day.他虽然年纪相当大,仍然每天慢跑.
参考资料:百度百科-as
as as和not so as的区别
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分析如下:
1.as …as 译为和……一样(用于肯定句),表示的是同级比较,中间可以加形容词或副词。
2.not as …as 译为和……不一样(用于否定句),也表示同级比较,中间可以加形容词和副词。但是要区分与not so …as ,前者语气弱,后者语气强。
一、as作连词的用法
1.as...as意为"和……一样",表示同级的比较。使用时要注意第一个as为副词,第二个as为连词。其基本结构为:as+ adj./ adv. +as。例如:
(1)This film is as interesting as that one.这部电影和那部电影一样有趣。
(2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
2.其否定式为not as/so +adj./ adv. +as。例如:
This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
3.若有修饰成分,如twice, three times, half, a quarter等,则须置于第一个as之前。例如:
Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
4.几个关于as...as的常见句型:
(1)as...as possible 例如:
Please answer my question as soon as possible.请尽快回答我的问题。
(2)as...as usual/before 例如:
She looks as pretty as before.她看起来和以前一样漂亮。
(3)as long as... (引导条件状语从句) 例如:
It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。
(4)as far as 例如:
He walked as far as the railway station yesterday evening.昨天傍晚,他一直散步到火车站。
(5)as well as 例如:
She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
5.as作连词引导让步状语从句
Strange as it may seem, nobody was injured in the accident.这次as单独引导定语从句时,先行词可以是一个词,也可以是一个句子或短语。例如:
(1) She is late, as is often the case.她迟到了,这是经常的事。(先行词是整个主句)
(2) To shut your eyes to facts, as many of you do, is foolish.对事实视而不见--你们好多人都是如此的愚蠢。(先行词是不定式短语)
意外虽然显得令人不可思议,却没有人受伤。
6. 作连词,引导方式状语从句或比较状语从句,作“如”、“像”解。如:
He isn't as old as he looks.
他不像看上去那样老。
注意:这句话中第一个as是副词(同样地),第二个是连词,引导比较状语从句。
7. as用作连词引导时间状语从句
as与when,while都是引导时间状语从句的从属连词,含义都是"当……的时候"。但它们有区别:用when时,从句的动作可以与主句的动作同时发生,也可以先于主句的动作发生;用while时,从句的动作为一过程,主句动作与从句动作同时进行或在从句动作过程中发生;用as时,主句和从句的动作同时发生,具有延续的含义。例如:
(1)It was snowing when he arrived at the construction site.他到达工地时,天正在下雪。
(2)He was watching TV while his mother was cooking.他母亲做饭时他在看电视。
(3) You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明。
8. as用作连词引导原因状语从句
as,because,since都可以表示因果关系,连接原因状语从句,含义是"因为,由于",但它们有区别:because表示的语气最强;as一般放在句首,语气较弱,较口语化;since常常用在书面语中,表示多为对方已知的、或稍加分析便可得知的原因,有时可译作"既然"。例如:
(1) He will succeed because he is in earnest.他一定会成功,因为他很认真。
(2) Since you are so sure of it he'll believe you.既然你对此如此有把握,他会相信你的。
(3) As rain has fallen, the air is cooler.因为下过雨,空气比较清爽。
9.as作连词引导让步状语从句
as与although (或though),however (或no matter how)等都可以引导让步状语从句,含义是"虽然,尽管",但它们有区别:although语气稍正式些,可放在句首,也可放在句中,主句中不能再用but,但可以用yet;as所表示的语气较强,引导的让步状语从句用倒装语序;however引导让步状语从句时,它的后面可跟形容词或副词,也要用倒装语序。例如:
(1) Although he is quite old, he still jogs every day.他虽然年纪相当大,仍然每天慢跑。
(2) Strange as it may seem, nobody was injured in the accident.这次意外虽然显得令人不可思议,却没有人受伤。
(3) However hard he may try, he will not attain his goal.无论他怎样努力也达不到目标。
二、as作介词的用法
as作介词,意思是"作为","以……身份"。例如:
(1)He caYou'll be hanged as a spy early tomorrow morning . 明天早上你将作为间谍被绞死。
(2)me to China as a tourist five years ago.他五年前以游客的身份来过中国。
as...as在句子中做什么成分
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第一个as是副词,修饰形容词 ;第二个 as 是连词,引导 比较状语从句,从句中的谓语动词往往会省略。
as...as意为"和……一样",表示同级的比较。使用时要注意第一个as为副词,第二个as为连词。其基本结构为:as adj./ adv. as。例如:
1、This film is as interesting as that one.这部电影和那部电影一样有趣。
2、Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。
其否定式为not as/so adj./ adv. as。例如:This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。
若有修饰成分,如twice, three times, half, a quarter等,则须置于第一个as之前。例如:Your bag is twice as expensive as mine.你的袋子比我的贵一倍。
几个关于as...as的常见句型:
1、as...as possible Please answer my question as soon as possible.请尽快回答我的问题。
2、as...as usual/before She looks as pretty as before.她看起来和以前一样漂亮。
3、as long as... (引导条件状语从句) It took us as long as three years to carry out the plan.我们花了长达三年的时间才完成这项计划。
4、as far as He walked as far as the railway station yesterday evening.昨天傍晚,他一直散步到火车站。(5)as well as She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。
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