as 有什么意思？？？有什么语法功能 在复合句中as有什么特殊的语法
as作介词，意思时“作为”，“以……身份”。例如：He came to China as a tourist five years ago.
而表示像…一样时，like通常作介词用，而介词后面通常接名词，代名词和动名词。
as in Australia“和在澳大利亚一样”。
as……as
AS +adj(原级)+AS
AS +adv(原级)+AS
as soon as 一……就
as soon as possible 尽可能快地
as early as possible 尽可能早的
as carefully as you can 尽可能认真地
as careful as you can 尽可能认真的
1。as是连词，表示“随着”的意义。lives是life的复数，意义是“生活”。<BR>
2。as是连词，表示“因为，由于”的意义。wanting是现在分词，表示主动意义，wanting to buy cars=who want to buy cars。
As的用法小结
as可以作连词、介词及关系代词和副词。现将其用法小结如下:
（一）、 as作连词的用法:
1.作“在-------期间，当----的时候”引导时间状语从句.注意与when、 while的用法区别。
①下列情形时,只用as, 而不用when或while。
1)用于表示同一个人的两种动作交替进行,指一边----一边. 如:
The girl sings as she goes to school.
He looked behind occasionally as he went forward in the forest.
2)表示两个同步发生的动作或行?意思是随着-----的发展.如:
As time went on / by, she became more and more beautiful .
As children get older, they become more and more interested in everything.
3)表示两个短暂行为或事情几乎同时发生.如:I watched her as she read the book.
I thought of it just as you opened your mouth.
Just as the flying worm hit her face, she gave a loud cry.
4)接在名词后面表示某一个年龄段时.如:
As a young man, he was active in sports.
②when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。如:When I was at college, I could speak several foreign languages. When the clock struck twelve, I had slept for 2hours.
as可以作为条件状语,译作当,,,,的时候。
可以译作作为,,,
work as a teacher.
译为同样地,也,
as well as me.
as well.
介词
我是
请问as在这句话中的语法作用是什么？~
with这里是接后面a sense if的
As pressing这里是插入语，as是如同的意思
as引导定语从句~
He uses the same book ( ) I read yesterday.
a. that b. as c. one d.it
答案锁定在A和B 上。that 和as 作为关系代词都可以引导定语从句，那么选哪个呢？我们习惯上会选B,而that 行不行呢？其实，A和B都行。只是意思上稍有差别。选that 是指同一本书；而as则指同种类，不见得同物。
关于定于从句，我们对that/which/who/ whose/when /where.....等引导词引导的都比较熟悉，而as则有些模糊。下面我就详细得把as定语从句的用法及其与其他定语从句的区别说一下。
"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)
注意:先行词中有the same修饰时，定语从句也可用that引导，但意思上有区别，as表示与此同类； that表示就是那一个，同物。
例如:Have you brought the same book that I gave you yesterday?
你有没有把我昨天给你的那本书带来啊？( that在定语从句中作宾语，先行词是book。体会：本句中所指的书是同一本，上句中指的是同一类书，而并不就是那一本。)
as ／which引导非限制性定语从句。
引导词as和which的区别在于：
①as引导的非限制性定语从句可放于主句前、主句中、主句后，而which引导的非限制性定语从句一般放于主句后或句中。as放在句首的情况常用的句式 有as we all know,as is mentioned above,而which我们则看不到这样用于句首的情况。
②as常与从句中的know，see， hear，expect等动词连用，也常用于as often happens，as is often the case（常有的事）等句子中；而which一般不用于以上情况。
③as有“正如”的含义，which没有此含义。如：
As is well known，Shanghai is a big city．
Some of the roads were flooded， which made our journey more difficult．
