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as是考研英语中十分常见的单词，用法灵活多样，是英语中最常用的词汇之一。
as主要有两种词性，分别为介词和连词。
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，而对其所引导的从句类型的识别也就成为了as理解的难点。
在此对as引导各类从句进行汇总，并对各类从句的特点给出具体总结。
一、as引导定语从句as引导定语从句时，既可以引导限定性定语从句，又可以引导非限定性定语从句。
区分as引导定语从句和其它从句的关键特征是：as引导定语从句时在从句中做成分，通常做主语或宾语。
1、as引导限定性定语从句。
如从句所修饰的名词前有such、the same、as出现，后面的定语从句将由as引导，形成such...as，the same...as，as…as这样的固定结构，译为“和……一样”。
例1：I never heard such stories as he told.我从未听过他所讲的那样的故事。
例2：He’ll repeat such questions as are dis cussed in the book.他将重复书中讨论过的问题。
例3：They made the same mistake as others would have made on such an occasion.他们犯了和其他人在这种场合下会犯的同样错误。
2、as引导非限定性定语从句。
as引导非限定性定语从句，往往指代一整句话，通常表示“正如”的意思。
as引导的非限制性定语从句位置相对比较灵活，可以位于先行词之前、之后或中间。
例：As is known to everybody, the moon travels round the earth.众所周知，月亮绕着地球转。
二、as引导时间状语从句as引导时间状语从句多用于口语，强调“同一时间”或“一先一后”，有时还有“随着”的含义。
as的六种用法
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，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。
扩展资料
as的六种用法
1、as做介词，意思是“作为”
eg.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”
eg.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”
eg.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”
eg.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”
eg.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
eg.This is the same game as I played yesterday.这和我昨天玩的游戏一样。
上一篇：下一篇：
~。
as引导的五种状语从句以as引导的状语从句是英语中常用的一种从句结构，可以用来修饰句子的动作或状态，表达原因、方式、时间、条件和比较等关系。
下面列举了十个以as引导的状语从句，分别用于不同的语境和目的。
1. 原因状语从句：As it was raining heavily, we decided to stay indoors. (因为下大雨，我们决定待在室内。
)在这个例子中，as引导的状语从句表达了下雨的原因，解释了为什么我们决定待在室内。
2. 方式状语从句：He speaks English fluently, as if he were a native speaker. (他说英语很流利，就像是母语一样。
)这个例子中的as if引导的状语从句用于描述他说英语的方式，暗示他非常熟练。
3. 时间状语从句：She left early for work, as she didn't want to be late. (她早早就去上班了，因为她不想迟到。
)as引导的状语从句表达了她早早离开的时间原因，解释了她为什么不想迟到。
4. 条件状语从句：As long as you study hard, you will pass the exam. (只要你努力学习，你就会通过考试。
)这个句子中的as long as引导的状语从句表示条件，说明只要你努力学习，就能通过考试。
5. 比较状语从句：She is as tall as her sister. (她和她妹妹一样高。
)这个例子中的as引导的状语从句用于进行比较，表示她和她妹妹的身高一样。
6. 原因状语从句：As I was tired, I decided to go to bed early. (因为我累了，所以我决定早点上床睡觉。
)这个例句中的as引导的状语从句解释了我决定早点上床睡觉的原因，即因为我累了。
7. 方式状语从句：He ran as fast as he could to catch the bus. (他尽可能快地跑去赶公交车。
高中英语as用法全归纳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 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“随着……”或者“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;As time goes by, I come to realize that it is so important to learn English.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 sets 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;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,它要求将表语和状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．as 用作从属连词,引导方式状语从句例如：When you are in Rome, do as the Romans do.Tell it as it is.Leave things as they are.You look good as you are.The house looks ugly as it is now; it needs improving.I would like to sell the house as it is.The exhibition worked out very well as planned.The result of the competition was very bad as expected.五、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：只要你能远离他们,你就安全了;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;He started as soon as he received the news. 他一得到消息就出发了;5. as to…=about…= concerning=with respect to…=regarding…关于例如：Can you give me some advice as to how to keep a good figure6. so as to…不放句首=in order to do…为了…例如：The students are studying hard so as not to fail the exam.六．as 可以用作介词“作为”The boy acts as a guide during the course of this trip.As a child, I used to go hunting with my grandfather.My cousin works as a nurse in a hospital.As a teacher, I will do whatever I can to help you.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;。
As引导从句归纳总结一、as引导定语从句一）as引导限制性定语从句主要结构有：the same…asas…assuch…asso…as主句中出现the same, as, such, so修饰先行词，需选择as做关系代词在定语从句中做主语或宾语。
1. It’s the same person as we wanted to find yesterday .我们昨天要找的是同一个人。
2. Such girls as he knows are good at English .他所认识的女孩都擅长英语。
3. Do you have such books as we like ?你有我们喜欢那种书吗？4. She will marry as healthy a man as she can find .她将嫁给她能找到的任何一个有钱人。
5. There is so warm a house as we want to live in .这里有如此暖和的房子，我们都想住在里面。
6. He has so difficult a problem , as none of us can solve .他有如此难的一个问题，我们没有人能解决。
二）引导非限制性定语从句1. as引导非限制性定语从句，指代整个主句内容，从句可置于句首，句中或句尾1) As everyone knows ,China is a beautiful country with a long history .每个人都知道，中国是一个有着悠久历史的美丽国家。
2) The earth , as we know , moves round the sun .地球，我们都知道，围着太阳转。
3) Tom works hard and is willing to help others, as we all know.汤母工作努力，并且乐于助人，这一点我们都知道。
As引导的从句一、As引导让步状语从句为了帮助同学们全面掌握让步状语从句的倒装用法，本文将这类语法现象归纳为以下五种句型：1、名词+ as / though +主语+动词King as he was，he was unhappy. 他虽是国王，但他并不幸福。
Child as he is，he knows to help other. 他虽是个孩子，却知道帮助别人。
【说明】其中的动词通常为连系动词，也就是说位于句首的名词是其后连系动词的表语。
另外，要特别注意位于句首的名词前习惯上不用冠词，即使其前有形容词修饰也不用冠词。
比较：Boy as ［though］he is，he likes to play with girls.=Though he is a boy，he likes to play with girls. 他虽是男孩，却喜欢与女孩子玩。
Strong man as ［though］he is，General Botha has been severely put to the test during thepast few weeks.= Though he is a strong man，General Botha has been severely put to the test during the past few weeks. 波赛将军虽然坚强，但在过去的数周里也受到了严峻的考验。
2、形容词+ as / though + 主语+ 动词Successful as he is，he is not proud. 他虽然成功，但不骄傲。
Improbable as it seems，it’s true. 虽然看起来不太可能，但却是真的。
Stupid as it sounds，I was so in love with her that I believed her. 尽管听起来很愚蠢，我是如此爱她竟然相信了她的话。
as从句用法归纳与总结以下是关于 as 从句用法的归纳与总结：**一、as 引导时间状语从句**表示“当……的时候；随着”例句：1. As I was walking in the park, I saw a beautiful bird. （当我在公园散步时，我看到了一只漂亮的鸟。
）2. As time goes by, we become more mature. （随着时间的流逝，我们变得更成熟了。
）**二、as 引导原因状语从句**表示“因为；由于”例句：3. As it was raining hard, we stayed at home. （因为雨下得很大，我们待在家里。
）4. As she was ill, she didn't go to school. （由于她生病了，她没去上学。
）**三、as 引导方式状语从句**表示“按照；如同”例句：5. Do as I tell you. （照我告诉你的做。
）6. You should do the job as he did. （你应该像他那样做这项工作。
）**四、as 引导比较状语从句**（1）“as...as...”表示“和……一样”例句：7. He is as tall as his brother. （他和他哥哥一样高。
）8. This dress is as beautiful as that one. （这件连衣裙和那件一样漂亮。
）（2）“not as/so...as...”表示“不如……”例句：9. She isn't as/so smart as her sister. （她不如她姐姐聪明。
）10. This book isn't as/so interesting as that one. （这本书不如那本有趣。
）**五、as 引导让步状语从句**表示“虽然；尽管”，从句要倒装例句：11. Child as he is, he knows a lot. （尽管他是个孩子，他懂得很多。
as的用法归纳
“as”是一个英语连词，具有多种用法。
以下是“as”的用法归纳：
1、引导时间状语从句：as表示“当……时候”，“随着……”，“一经……就……”，强调主句和从句中的动作或状态同时发生或进行。
例句：As time goes by, I grow more and more confident. 随着时间的推移，我变得越来越自信。
2、引导原因状语从句：as表示“因为”，与because相比，语气较轻。
例句：As it was getting dark, we decided to stay in the hotel. 因为天色渐渐暗了，我们决定在旅馆里待着。
3、引导方式状语从句：as表示“以……方式”，“像……一样”。
例句：She looks at the world as if she were the only person in the world. 她看待世界的方式就像她是世界上唯一的人一样。
4、引导让步状语从句：as表示“尽管”，“虽然”。
例句：Young as he is, he knows a lot. 尽管他很年轻，但他知道很多事情。
5、引导比较状语从句：as表示“与……一样”，“像……一样”。
例句：He is as tall as his father. 他和他父亲一样高。
6、作为介词：as还可以作为介词，表示“作为”，“以……身份”。
例句：He works as a teacher. 他作为一名教师工作。
综上所述，“as”是一个非常灵活的连词，具有多种用法。
掌握其用法可以更准确地表达思想和意义。
as是考研英语中十分常见的单词，用法灵活多样，是英语中最常用的词汇之一。
as主要有两种词性，分别为介词和连词。
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，而对其所引导的从句类型的识别也就成为了as理解的难点。
在此对as引导各类从句进行汇总，并对各类从句的特点给出具体总结。
一、as引导定语从句
as引导定语从句时，既可以引导限定性定语从句，又可以引导非限定性定语从句。
区分as引导定语从句和其它从句的关键特征是：as引导定语从句时在从句中做成分，通常做主语或宾语。
1、as引导限定性定语从句。
如从句所修饰的名词前有such、the same、as出现，后面的定语从句将由as引导，形成such...as，the same...as，as…as这样的固定结构，译为“和……一样”。
例1：I never heard such stories as he told.
我从未听过他所讲的那样的故事。
例2：He’ll repeat such questions as are discussed in the book.
他将重复书中讨论过的问题。
例3：They made the same mistake as others would have made on such an occasion.
他们犯了和其他人在这种场合下会犯的同样错误。
2、as引导非限定性定语从句。
as引导非限定性定语从句，往往指代一整句话，通常表示“正如”的意思。
as 引导的非限制性定语从句位置相对比较灵活，可以位于先行词之前、之后或中间。
例：As is known to everybody, the moon travels round the earth.
众所周知，月亮绕着地球转。
二、as引导时间状语从句
as引导时间状语从句多用于口语，强调“同一时间”或“一先一后”，有时还有“随着”的含义。
例1：As I was going out, it began to rain.
当我出门时，开始下雨了。
(as强调两个动作紧接着发生，不强调下雨的特定时间。
)
例2：As time goes on, he will understand what I said.
随着时间的推移，他会理解我所讲的话。
三、as引导原因状语从句
as表示“因为”，与because相比，较口语化，所表达的原因语气较弱，所表的原因比较明显，或是已知的事实。
例1：As the weather is so bad, we have to delay our journey.
因为天气太糟糕，我们不得不推迟旅行。
例2：Any new source of energy will be very welcome, as there is already a shortage of petroleum.
任何新型能源都将大受欢迎，因为石油已经出现短缺。
四、as引导方式状语从句
as表示“按照”，“以……方式”，“像……一样”，“正如”。
例：Do as the Romans do when in Rome. 入乡随俗
注：as在引导方式状语从句时，还常出现在一个固定的类比结构中：(just) as …, so…。
这一句型表示类比，基本含义是“正如……，所以……”。
例：Just as virtue is its own reward, so is vice its own punishment.
善有善报，恶有恶报。
五、as引导让步状语从句
as可以表示“尽管”，“虽然”，引导让步状语从句，但必须构成倒装。
让步状语从句倒装规则有两类：
1、形容词/副词/分词/名词(无冠词)/介词短语等+as+主语+谓语动词，主句。
例1：Much as I like you, I couldn’t live with you.
我尽管很喜欢你，却不能和你在一起生活。
例2：Child as he is, he knows to help others.
尽管他是个孩子，他懂得帮助别人。
2、动词原形+as+主语+助动词(may/might, will/would, can/could,
do/does/did)，主句。
例：Try as we may, we cannot sense directly the television signal sent out from the broadcast station.
尽管我们费了很大的劲，也无法直接觉察发射台发出的电视信号。
六、as引导比较状语从句
as引导比较状语从句，其基本结构是as…as。
前一个as是副词，后一个as 是比较状语从句的连词。
否定结构为not so much … as …。
例1：Small as it is, the ant is as much a creature as are all other animals on the earth.
尽管蚂蚁很小，但是它同地球上的任何其他动物一样，也是一种动物。
例2：It was not so much the many blows he received as the lack of fighting spirit that led to his losing the game.
与其说是他受到了许多打击，还不如说是缺乏斗志使他输掉了比赛。
