as可用作连词，引导比较、时间、原因及方式等四种状语从句，应注意的是，引导的比较状语从句往往有省略；引导的时间状语从句一般用一般现在时而不用一般将来时；引导原因状语从句时与“Because”和“since”引导的从句比较起起来语气最弱。
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”。
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.
③while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如:Work while you work. Play while you play.
2. As =Since 作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如: As he’s been ill for ages, I will help him.
As / Since you're not feeling well, you may stay at home.
As he wasn't ready , we went without him.
3. As =in the way that作"像"、"按照……的方式"解,引导方式状语从句。如:
Do as I told you.
Remember, you must do everything as I do.
4. 用于as--- as或not / so/ as ---- as中,前一个as是副词,后一个as是连词,引导比较状语从句。如:They helped the old as much as possible.
I don't speak English so/ as well as she does.
5. 表示虽然,尽管等,引导让步状语从句,常用倒装语序,模式为:
adj. /adv. / n.+as +主语+谓语+主句。如: Young as he is, he knows much.
Tired as they were, they walked on.
6. 表示也------一样。She is a doctor, as was her husband.
（二）、as作关系代词,引导定语从句,表示正如,这一点.如:
He is very careful, as we all know.
As is well-known, Taiwan belongs to China.
另外,当先行词被the same, such等词修饰时,常用as来引导定语从句。如:
Such a clever girl as she can learn anything quickly.
I was reading the same book as he bought yesterday.
（三）、as作介词的用法.
1.表示好像。如:He dressed as a policeman.
2. 表示作为当作。如：I found a job as a guide.
3. 当某人是某身份时。如：As a child , she was sent to abroad.
4. as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语。如:
As a Party member, I'll take the lead in everything. (状语)
She works as a model. (状语)
She has me as one of her best friends.(引起宾语补足语)
（四）、作副词的用法1 表示与------等同。如：This dress is twice as expensive as that one. 2 像，如等。如：As before, he remained unmoved.
总之，通过以上的分析，我们对as的词性和用法有了比较全面的理解和把握，才能在实际的运用中做到心中有数，应付裕如。
常见词as用法总结
近几年高考中有关as一词的题目出现过很多次，其中as或是最佳选项，或是干扰项，或是题干中的关键信息点，涉及as作为连词、介词、关系代词、副词以及习语等各种用法。现结合高考试题将as的用法归纳如下：
一、用作连词的as
1. 引导时间状语从句，表示“当……的时候”，其用法与when和while类似。例如：As a child (When he was a child), she was sent to six different schools. 此用法中as多表示从句与主句动作同时进行，一般不与状态动词连用，意为“一边……一边……”。例如：She sang songs as she did her homework.
as 还可以表示一动作紧接着另一动作发生，说明另一动作的结果，有“随着……”的含义。例如：As time went by, we found he was an honest man./As he grew older, he lost interest in everything except gardening.
例1 It wasn’t until nearly a month later________ I received the manager’s reply.
A. since
B. when
C. as
D. that
解析：本题中的as与when一起作为干扰项，容易使同学往时间状语从句上思考，事实上本题是强调句，正确选项是D。
2. 引导原因状语从句，表示“由于，因为”，相当于because, 但通常置于句首。例如：As he is a qualified doctor, I trust his advice on medical matters.
例2 _____ modeling business is by no means easy to get into, the good model will always be in demand.
A. While
B. Since
C. As
D. If
解析：本题中as干扰性很强，很多同学误以为是原因状语从句，但仔细分析不难发现正确答案应是A（while表示“只要”）。
3. 引导让步状语从句，通常可与although或though通用，但语序不同，although或though用于句首，as用于倒装结构。例如：Young as I am, I already know what career I want to follow. /Although（或Though）I am young, I already know what career I want to follow.
as 表示让步用于倒装结构，通常将从句的表语、状语或动词前置。如果表语有冠词a/an, 需去掉。例如：Great scholar as he is, he is lacking in common sense./Much as I like you, I couldn’t live with you. / Try as he would, he couldn’t
open the door.
例3 _____ he has limited technical knowledge, the older worker has a lot of experience.
A. Since
B. Unless
C. As
D. Although
解析：as 虽然有引导让步状语从句的用法，但本题不是倒装结构，故正确答案应是D。
4. 引导方式状语从句，表示“如，像”。例如：When in Rome, do as Romans do./Do to others as you would have others do to you.
例4 We wanted to get home before dark, but it didn’t quite ______ as planned.
A. make out
B. turn out
C. go on
D. come up
解析：本题考查动词词组辨析，题干中的“as planned”提供了重要信息，答案选B。
5. 固定句型：“主句，as +be/do+主语”表示“也一样”。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.
二、用作介词的as
1. 表示“如，像”。例如：They got united as one man./She spoke of me as her dearest friend.
2. 表示“作为，当作”。例如：As a League member, you should think more of others./After graduating from the college, he firstly worked as a clerk in a big company.
3. 与某些动词搭配，表示“把……当作……”，如：look on...as..., regard...as..., treat...as..., consider...as..., think of...as..., see...as...等。其中
consider...as...中的as可以省略。as与famous或known搭配，表示“作为……而出名”。
例5 Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.
A. knowing
B. known
C. being known
D. to be known
解析：如果熟悉be known as这一短语，运用有关非谓语动词的常识，就可选出正确答案B。
三、用作关系代词的as
1. 引导限制性定语从句，先行词前通常有as, so, such, same等修饰语。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a present.在此种用法中，同学们要注意与结果状语从句的区别。比如：①The teacher asked us such a difficult question that none of us could answer it.
②The teacher asked us such a difficult question as none of us could answer.
①句为结果状语从句，而②句则是定语从句。
2. 引导非限制性定语从句，用来指代整个主句（即先行句），表示“这一事实，那一情况”。从句可以位于句首、句中或句末。例如：We stand when the national anthem is played, as is the custom.
例6 ______ I explained on the telephone, your request will be considered at the next meeting.
A. When
B. After
C. As
D. Since
解析：根据句意，选项C是正确答案。这里as体现的正是本点所讲用法。
例7 _______ is our belief that improvements in health care will lead to a stronger, more prosperous economy.
A. As
B. That
C. This
D. It
解析：本题中的as项干扰性很强，容易误选。实际上，句中that 引导的应是真正的主语从句，it充当形式主语，故选D。如果将题干中的that换为逗号，则必须选as。
例8 Danby left word with my secretary ________ he would call again in the afternoon.
A. who
B. that
C. as
D. which
解析：that引导的从句是word的同位语，本题应选B。as无此用法，在这里起干扰作用。
四、用作副词的as
修饰形容词或副词，表示程度，意为“同样地”。例如：He swims fast, but I swim just as fast. 但它通常构成表示比较的结构as...as...，not as...as...。此结构中第一个as是副词，第二个as是连词。否定结构中的副词as可以由so代替。as...as possible和as...as one can也属于这种用法。例如：It is generally believed that teaching is as much an art as it is a
science./The movie was not as good as I had expected./I play tennis as well as him.
五、用在习语中的as
由as构成的习语很多，常见的有：as soon as “一……就”，引导时间状语从句；as（或so）long as “只要”，引导条件状语从句；as if/though “好像，仿佛”，引导方式状语从句或表语从句；as to（或as for）“至于，就……而言”；as much（或many）as“多达……”；as（或so）far as “就……的限度”；as a result of “（由于……的）结果”；as a matter of fact“事实上”；as well “也，还”；A as well as B“不但A而且B”；as it is“照现状看，看样子”，等等。这些习语在高考中出现频率较高，有的作为正确选项，有的作为干扰项，有的出现在题干。例如：
例9 I would like a job which pays more, but ______ I enjoy the work I’m doing at the moment.
A. in other words
B. on the other hand
C. for one thing
D. as a matter of fact
解析：选项D极具干扰意义，进一步研读会发现本题中的两个分句表达了一件事的两个对立面，故选B。
例10 —People should stop using their cars and start using public transport.
—______. The roads are too crowded as it is.
A. All right
B. Exactly
C. Go ahead
D. Fine
解析：本题的as没有出现在选项中，但题干中的as it is是解题的关键信息，正确选项为B。
例11 Maggie has been fortunate to find a job she loves and, _____, she gets well paid for it.
A. sooner or later
B. what’s more
C. as a result
D. more or less
解析：本题的后一个分句不表示结果，而是递进，故选B而不是C。
例12 The winter of 1990 was extremely bad. _______ most people say it was the worst winter of their lives.
A. At last
B. In fact
C. In a word
D. As a result
解析：选项D起干扰作用，正确选项为B。
以上总结的是as一词在教材中出现的主要用法及在高考卷中的具体应用，可以看出它词性多，词义广，用法灵活。同学们在复习中一定要理清思路，抓住重点，应用时仔细分析上下文，弄清逻辑关系，才能作出正确选择。
关系代词作定语从句主语时的省略
关系代词在定语从句中除作宾语可以省略外，在下列情况下，作主语也可以省略。1．定语从句中含there be，作定语从句主语的关系代词可以省略。
You must make a list of the names of the students there are in your class．
你必须列一张你班同学的名单。
He showed me the difference there is between what is right and what is wrong．
他给我指出了对和错的不同之处。
2．主句以there be开始，作定语从句主语的关系代词可以省略。
There is something keeps worrying me．
有些事一直使我担心。
There is a teacher here can speak Spanish．
这里有一位老师能说西班牙语。
3．主句以that is／was开始的句子中，作定语从句主语的关系代词可以省略。That's all is today's homework．
今天的家庭作业就是这些。（all后省去that）
Was that someone posted your letter？
是有人帮你把信寄走了吗？（someone后省去that）
4．主句以here is，here are开始，作定语从句主语的关系代词可以省略。
Here is the professor comes from the Oxford University．
这是从牛津大学来的一位教授。（professor后省去who）
Here are three or four of us got a full mark in the examination．
我们这里三四个人考试得了满分。（us后省去who）
5．主语以have（意思是“有”）作谓语，作定语从句主语的关系代词可以省略。如：
I have two more people should come to help me．
我还有两个人应该来帮助我。（people后省去who）
We have words to speak to those people will be put to do the work．
我还有话要对派去做这工作的人说。（people后省去who）
英语关系代词作定语从句主语省略的情况常见之于口语和非正式英语，对我们作为非本族语言的人来说应该慎用。但是了解这种省略情况是完全必要的，因为这会有助于我们识别和理解这种语言现象，提高我们的英语阅读能力和欣赏水平。
独立主格
由一个名词或代词作为逻辑主语,加上一个分词、形容词、副词、动词不定式或介词短语作为逻辑谓语构成,这种结构在形式上与主句没有关系,通常被称为独立主格结构。
（一）独立主格结构的构成：
名词(代词)+现在分词、过去分词
名词(代词)+形容词
名词(代词)+副词
名词(代词)+不定式
名词(代词) +介词短语构成
独立主格结构主要起状语作用,相当于一个状语从句,多用来表示行为、方式、伴随等情况,有时也可用来表示时间、原因、条件等情况。
1、名词或代词主格+ 分词
①The experiment done, the students went on to take notes in the experiment report.
实验做完了,同学们继续在实验报告上做记录。
②Time permitting, we can have a walk around the playground after supper.
如果时间允许,晚饭后我们可以到操场上散步。
2、名词或代词主格+ 形容词
①Computers very small, we can use them widely. 电脑虽小,我们却能广泛地利用它们。
②The clothes very dirty, you'd better wash them quickly. 衣服很脏,你快点儿洗洗吧!
3、名词或代词主格+ 不定式
The last guest to arrive, our party was started. 最后一位客人到了,我们的晚会就开始了。
4、名词或代词主格+ 介词短语
①Our English teacher came into the classroom, papers in hand.
我们的英语老师走进了教室,手里拿着试卷。
②There is a river in the valley, fresh flowers on the banks.
山谷中有一条河,河两岸长满了鲜花。
5、名词或代词主格+ 副词
①The meeting over, our headmaster soon left the meeting-room. 散会了,校长很快就离开了会议室。
②The lights off, we could not go on with the work. 灯熄了,我们不能继续工作了。
as的用法总结大全 as可以在句子中充当不同成分,下面小编给大家整理了as的用法总结,希望大家喜欢! as的用法 1、as做介词，意思是“作为” 例句： French is known as the most beautiful language in the world. 法语以世界上最美丽的语言著称。 2、as做连词，引导时间状语从句，意思是“当……的时候” 例句： My mother was cooking fish as I arrived home. 当我到家的时候，我妈妈正在做鱼。 3、as做连词，引导原因状语从句，意思是“因为” 例句： As rain has fallen, the air is cooler. 因为下过雨，所以空气比较凉爽。 4、as做连词，引导让步状语从句，意思是“虽然” 例句： Young as he is, he has been one of the most famous painters in our country. 虽然他还很年轻，但已经成为我们国家最有名的画家之一。 5、as做连词，引导方式状语从句，意思是“以……方式” 例句： Do as the Romans do when in Rome. 入乡随俗 6、as做关系代词，引导定语从句 例句： This is the same game as I played yesterday. 这和我昨天玩的游戏一样。
as相关短语 as well 也;同样地;还不如 as well as 也;和…一样;不但…而且 as one 一致的 as soon ◎宁愿…，宁可… , ◎同样乐意，同样愿意(常用于 would，had 之后)[亦作as lief] , ◎同样高兴(或愿意) , ◎宁愿,宁可(与 would, had 连用) as soon as 一…就… as long as 只要;和…一样长 as if 犹如，好似 as much 也;同样多的 as for 关于，至于 as soon as possible 尽快 as a whole 总的来说 as far as adv. 至于，直到，远到;就…而言 as of 自……起 as though 好像;仿佛 as being 就是;即像 as early as 早在…的时候 as usual 像往常一样;照例 as good as 和…几乎一样，实际上等于… as per 按照，依据;如同 as such 同样地;本身;就其本身而论 As 用法专练 1.It is generally believed that teaching is ____ it is a science. A. much as an art as B. as much an art as C.an art as much as D.as much as an art 2. _____ I admire David as a poet,I don’t like him as a man. A.Only if B.If only C. As much D.Much as
AS的用法总结 AS是英语中一个重要的连词，它有多种用法。下面将对AS的不同 用法进行总结和说明。 一、引导时间状语从句 AS可以引导时间状语从句，表示两个动作在时间上的先后顺序。 例如：As I was walking to school, it started to rain.（当我走向学校时，开始下雨了。） 二、意为"像……一样" AS可以表示两个事物在某方面的相似性。 例如：She danced as gracefully as a swan.（她舞蹈起来像天鹅一样优雅。） 三、意为"因为" AS可以用来表示原因或理由。 例如：As it was getting late, we decided to go home.（因为时间已晚，我们决定回家。） 四、表示"尽管"或"虽然" AS可以用来引导让步状语从句，表示虽然有某种情况存在，但并 不影响后面的结果。
例如：As difficult as it was, she managed to pass the test.（尽管很困难，她还是通过了考试。） 五、用于比较 AS可以表示比较中的一方，意思是"像……一样"或"正如……一样"。 例如：He is as tall as his father.（他和他的父亲一样高。） 六、用于让步状语从句 AS可以引导让步状语从句，表示不管某种情况如何，其结果依然 是如此。 例如：As busy as she was, she always found time for her family.（尽管很忙，她总是找到时间陪伴家人。） 七、用于强调 AS可以用来强调一种特定的身份或角色。 例如：As a teacher, he always puts his students first.（作为一名教师，他总是把学生放在第一位。） 综上所述，AS作为一个连词，在英语中有多种用法，包括引导时 间状语从句、表示相似性、表达原因、引导让步状语从句、用于比较、引导让步状语从句以及用于强调。熟练掌握AS的不同用法，能够帮助 我们更好地理解和运用英语语法。因此，在学习英语的过程中，我们 应该加强对AS用法的学习和练习，以提高语言表达的准确性和流畅性。
as的用法总结及典型句子 as作为介词时，用法和语义较单一，其含义为“作为”。但是as作为连词词性时， 其用法和功能较多，可以引导各类从句。你的钢笔书写起来和我的一样流畅。as引导原因状语从句、时间状语从句、方式状语从句、让步状语从句和定语从句。例如：He smiled as he said goodbye to me。 一、as作连词的用法 1.as...as的用法 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)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。 (2)This film is as interesting as that one.这部电影和那部电影一样有趣。 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。 2、as引导时间状语从句 此时，as译作“当……时候”，可以放在主句之前，也可以放在主句之后。例如： He smiled as he said goodbye to me. 他向我道别时微笑了一下。 As she was walking in the park,she heard a girl singing. 她在公园里散步时，听到一位女孩在唱歌。 I sang an English song as I went along the river. 我边沿河边走边唱英文歌。 3.as用作连词引导原因状语从句
千里之行，始于足下。 as的用法总结大全 as 的常见用法如下： 1. 作为介词使用： - 用于表示身份、性质、职业等：He works as a teacher. (他是一名教师。) - 用于描述某人的外貌、特征等：She is tall as her mother. (她像她妈妈一样高。) - 用于表示某事物的用途、功能等：You can use it as a tool. (你可以把它当作工具使用。) 2. 作为副词使用： - 表示程度、比例等：The temperature dropped as low as -10 degrees. (温度降低到-10度。) - 表示方式、方法等：He did it as you suggested. (他按照你的建议做了。) - 表示原因、目的等：He did it as he wanted to prove his point. (他这样做是因为他想证明他的观点。) 3. 作为连词使用： - 表示时间：As she was sleeping, the phone rang. (就在她睡觉的时候，电话响了。) - 表示原因、结果等：I couldn't go to the party, as I was sick. (因为我生病了，所以无法去参加派对。) - 表示顺序、方式等：Do as I told you. (按照我告诉你的做。) 4. 作为关系代词使用： 第1页/共2页
锲而不舍，金石可镂。 - 引导定语从句：The woman who is sitting in front of me is my mother. (坐在我前面的女人是我妈妈。) 5. 作为形容词使用： - 表示同样的、相似的：He has the same interests as me. (他和我有相同的兴趣。) 以上是 as 的常见用法总结，不同的上下文和语境可能会有不同的用法，请根据具体情况来选择合适的用法。
as的用法归纳 as一词看似很简单，但词性多，词义广，用法灵活，不易掌握，而且在高中阶段出现频率也很高，因此系统地掌握该词对英语的学习大有益处。现将其用法归纳如下： 一、as作介词的用法 1．表示“好像（某人）”，例如：The actor was dressed as a poli-ceman.这个演员化妆成一名警察。 2．表示“有（某人）的身份或特征；作为，当作”，例如：I'm speaking as your employer.我以雇主的身份和你说话。 3．表示“因某人是（某身份）”，例如：As his private secretary，she has access to all his correspondence.由于是他的私人秘书，她能接触到他所有的信件。 4．表示“当某人是（某身份）时”，例如：As a child，1went ab-road twice.我儿时曾出国两次。 注意：as和like都可以作介词，但意义不同。as表示“以实际的身份或地位”.like则表示“与…相似，以与…相类似的方式”例如：（l）He spoke asa teacher.（2）He spoke likea teacher.句（1）的意思是：“他作为老师发言”或“他以老师的身份发言”，句（2）的意思是：“他讲话很像是老
师”。 二、as作副词的用法 表示“达到与…相同的程度；与…等同”，例如：He swims fast，but I swim just as fast. She has a lot of books，but I don't have as （so）many.（在否定句中，as可以用so来替代） 三、as作关系代词，引导定语从句 as作关系代词，既可以引导限制性定语从句，也可以引导非限制性定语从句，既可以单独使用，也可以与其他词连用，其用法要比that和which更为复杂，应加以比较和that，which的区别。 （一）as引导限制性定语从句，通常和一些词连用，表示“正如，像…一样” （1）用于such---as--的结构中 例如：I’ve never seen such a talented young man as he is．我从来没有见过像他这样有才能的人。 Such books as I have read are all classical works.这些像我已经读过的书都是经典的著作。 It was such a heavy stone as I can't lift.这是如此重的一块石头，我拎不动。 注意：比较该句和It was such a heavy stone that I can't lift it.达两句结构完全不同。such---that--是
as的用法总结 as是英语考试中用得比较多的一个词，也是很多学生反映较难掌握的一个词。as的词性较多，用法也较复杂，因此掌握该词会对英语学习很有帮助。下面笔者就对as的用法作一个简单的归纳。 一、as作为从属连词，可以引导下列从句： 1、as引导时间状语从句，意为“正当……的时候”、“一面……一面……”、“随着……”，从句可放主句之前或主句之后。 As I was coming here, I met your brother. As he walked on, he felt himself getting more and more tired. 【知识拓展】：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。 He was watching TV while his mother was cooking.他母亲做饭时他在看电视。 You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明。 2、as引导原因状语从句，意为“由于”大多位于主句之前，偶尔在前或后。 As this question is of great importance, we will discuss it once again. Water, as it occurs in nature, is never very pure. We couldn‘t send the children to school as life was very hard in those days. 【知识拓展】：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。 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。As rain has fallen, the air is cooler.因为下过雨，空气比较清爽。 3、方式状语从句，意为“如同”、“按照……的方式、样子、办法”。As从句总跟在主句之后。You must try to hold the tool as I do. 象我那样拿住工具。 Leave things as they are. 让那些东西保持原样。 3、as引导让步状语从句，意为“虽然”，多在主句之前，且多用倒装。（应将从句主要成分的形容词、副词、原形动词、不加冠词的单数名词置于as 前面） Difficult as it is, we should not give it up. Child as he is, he knows something about electricity. 【知识拓展】：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。
as可用作连词，引导比较、时间、原因及方式等四种状语从句，应注意的是，引导的比较状语从句往往有省略;引导的时间状语从句一般用一般现在时而不用一般将来时；引导原因状语从句时与“Because”和“since"引导的从句比较起起来语气最弱. 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.
as用法总结 一、用作连词的as 1. 引导时间状语从句，表示“当……的时候”，其用法与when和while类似。 例如：As a child (When he was a child), she was sent to six different schools. 此用法中as多表示从句与主句动作同时进行，意为“一边……一边……”，一般不与状态动词连用。 例如：She sang songs as she did her homework. as 还可以表示一动作紧接着另一动作发生，说明另一动作的结果，有“随着……”的含义。 例如：As time went by, we found he was an honest man./As he grew older, he lost interest in everything except gardening. 例1 It wasn’t until nearly a month later________ I received the manager’s reply. A. since B. when C. as D. that 解析：本题的as中与when一起作为干扰项，容易使考生往时间状语从句上思考，事实上本题是强调句，正确选项是D。 2.引导原因状语从句，表示“由于，因为”，相当于because, 但通常置于句首。 例如：As he is a qualified doctor, I trust his advice on medical matters. 3.引导让步状语从句，通常可与although或though通用，但语序不同，although或though用于句首，as用于倒装结构。 例如：Young as I am, I already know what career I want to follow. /Although（或Though）I am young, I already know what career I want to follow. as 表示让步用于倒装结构，通常将从句的表语、状语或动词前置。如果表语有冠词a/an, 需去掉。
As的用法 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. 引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意，与while意义相近，强调两个动作同时发生；或某事一发生，另一事立即发生。eg： He shouted aloud as her ran along．他一边往前跑，一边高声地呼喊。 I was startled as he opened the door．他一开门，我吓了一跳。 as作连词，相当于when。eg； As a little boy (When he was a little boy)he began to learn to play piano．他小时候就开始学弹钢琴。 As与When、While的比较 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为,意思是随着-----的发展.如: As children get older, they become more and more interested in everything. As the sun rose the fog dispersed. 太阳一出来,雾随之消失。 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.
as的用法小结 今天和大家一起学习一下as的用法，快来一起学习吧，下面就和大家分享，来欣赏一下吧。 【新概念】as的用法小结 as可以作连词、介词及关系代词。现将其用法小结如下: 一、as作连词的用法: 1. 作当……的时候,引导时间状语从句。注意与when、while的用法区别。 ①when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 he was at college, he could speak several foreign languages. (表示一段时间) When the clock struck twelve, all the lights in the street went out. (表示时刻) ②while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如: Work while you work. Play while you play. ③但属下列情形时,只用as, 而不用when或while。 A) 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 dances as she sings on the stage. He looked behind from time to time// as he went forward.
B)表示两个同步发展的动作或行为,译为随着……。如: As time went on / by, she became more and more worried. As children get older, they become more and more interested in the things around them. C)表示两个短促行为或事件几乎同时发生。如: I thought of it //just as you opened your mouth. Just as the flying worm hit her face, she gave a loud cry. D) 后接名词表示某一年龄段时,用as。如: As a young man, he was active in sports. 2. as=since, 作既然、由于解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如: As / Since youre not feeling well, you may stay at home. As he wasnt ready in time, we went without him. 3. as=in the way that, 作像、按照……的方式解,引导方式状语从句。如: He speaks English as Americans do. Remember, you must do everything as I do. 4. 用于as...as...或not so/ as...as...中,前一个as是副词(副词后面跟形容词、动词、副词),后一个as是连词(连词后面可以跟动词、形容词、句子),引导比较状语从句。如:
as用法总结 一)as作副词，表示程度，意为“同样地”。在“as...as...”，“not as...as...”结构中的第一个as是副词，作“和/与...(不)一样”解。eg： Jack is as tall as his father.杰克和他的父亲一样高。 He doesn't speak English as/so fluently as you.他的英语说得不如你流利。 二)as作介词。 1.作“如，像”解。eg： They got united as one man.他们团结得像一个人一样。 2.作“充当，作为”解。eg： As a writer，he was famous.作为作家，他是很有名的。 三)as作连词，常用来连接主句和状语从句。 1.引导时间状语从句，作“当...的时候”解，有“随着...”之意，与while意义相近，强调两个动作同时发生;或某事一发生，另一事立即发生。eg： He shouted aloud as her ran along.他一边往前跑，一边高声地呼喊。 I was startled as he opened the door.他一开门，我吓了一跳。 as作连词，相当于when。eg; As a little boy (When he was a little boy)he began to learn to play piano.他小时候就开始学弹钢琴。 2.引导原因状语从句，作“因为，由于”解，与because的用法相近。eg; I must stop writing now，as I have rather a lot of work to do.我必须停笔了，因为我还有许多工作要做。 3.引导方式状语从句或比较状语从句，作“正如，(如)像”解。例eg： As in your country，we grow wheat in the north and rice in
as用法总结 AS是一个非常常用的词汇，在英语中有多种用法和含义。无论是口语还是写作中，AS都是一个必备的词汇。在本文中，我们将总结和探讨AS在不同语境中的用法，并给出相关例子，以帮助读者更好地理解和运用这个词汇。 一、AS作为连词 AS最常见的用法是作为连词，连接两个句子或短语，并表示因果关系、转折关系或比较。在这种用法中，AS常常搭配各种从句，如原因从句、结果从句、方式从句等。 1. 表示原因： 例句：She decided to stay at home as she was feeling unwell. （她因为身体不舒服所以决定呆在家里。） 2. 表示结果： 例句：He didn't study for the exam, as a result, he failed. （他没有为考试而学习，结果他没通过。）
3. 表示方式： 例句：Please do it as I told you. （请按照我告诉你的方式去做。） 二、AS作为副词 AS作为副词时，表示程度或方式。它常常被用来修饰形容词或副词，并且放在这些词之前。 1. 表示程度： 例句：She is as tall as her sister. （她和她姐姐一样高。） 例句：He works as hard as his colleagues. （他和他的同事们一样努力工作。） 2. 表示方式： 例句：He did it as instructed. （他按照指示去做了。）
例句：He spoke as if he were an expert. （他说话的方式好像他是个专家。） 三、AS作为介词 AS还可以作为介词使用，表示身份、角色或职业等。在这种情况下，AS通常与名词连用。 1. 表示身份： 例句：John works as a teacher. （约翰作为一名教师工作。） 2. 表示角色： 例句：She was cast as the lead actress in the play. （她在戏剧中被选为女主角。） 3. 表示职业： 例句：He has worked as a doctor for 10 years.
as的用法总结大全 as的用法总结大全楚薇、as做连词，引导时间状语从句，意思是“当……的时候〞 例句： MymotherwascookingfishasIarrivedhome. 当我到家的时候，我妈妈正在做鱼。 3、as做连词，引导原因状语从句，意思是“由于〞 例句： Asrainhasfallen,theairiscooler. 由于下过雨，所以空气比拟凉快。 4、as做连词，引导让步状语从句，意思是“固然〞 例句： Youngasheis,hehasbeenoneofthemostfamouspaintersinourcoun try. 固然他还很年轻，但已经成为我们国家最有名的画家之一。
5、as做连词，引导方式状语从句，意思是“以……方式〞 例句： DoastheRomansdowheninRome. 入乡随俗 6、as做关系代词，引导定语从句 例句： ThisisthesamegameasIplayedyesterday. 这和我昨天玩的游戏一样。 as相关短语 aswell也;同样地;还不如 aswellas也;和…一样;不但…而且 asone一致的 assoon◎宁愿…，宁可…,◎同样愿意，同样愿意(常用于would，had之后)[亦作aslief],◎同样高兴(或愿意),◎宁愿,宁可(与would,had连用) assoonas一…就…
aslongas只要;和…一样长 asif如同，好似 asmuch也;同样多的 asfor关于，至于assoonaspossible尽快 asawhole总的来讲 asfarasadv.至于，直到，远到;就…而言asof自……起 asthough好似;仿fo asbeing就是;即像 asearlyas早在…的时候 asusual像往常一样;照例 asgoodas和…几乎一样，实际上等于…asper根据，根据;好像 assuch同样地;本身;就其本身而论