as引导的从句

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as引导的五种状语从句

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。

as状语从句的用法

as状语从句的用法
as 引导的状语从句
1） as 引导时间状语从句,意为“随着……”,常与比级连用.
例如：We get wiser as we get older.
2). as 引导让步状语从句.需将表语或状语前置,有时也可用that / though 代替 as .
例如：Clever as he was, he still failed in examinations.
3） as 引导比较状语从句.与 than 引导的比较状语从句类似,有时从句用部分倒装.
例如： She took as much responsibility as her husband did.
4） as 引导表示强调意义的特殊比较句型.
－ as … as anything; as … as can be; as …as one can “极其…… , 到了最……的程度”
例如：He is as naughty as anything .
－ as … as one can; as … as permit; as best one can
“尽可能”
例如：He began to run, as fast as he could.
－as 引导类比从句,与 so 连用.表示“正如……所以……”
例如：As you brew, so must you drink.
－as 引导比例从句,与 what 用法相同.
例如：Books are to the mind as food is to the body。

as的三种用法

as的三种用法"as"是一个常用的英语单词，具有多种用法。

以下是"as"的三种用法及其例句：一、引导时间状语从句"as"可以引导时间状语从句，表示两个事件同时发生或相继发生。

例如：1.As he was sleeping, the phone rang.（他正在睡觉时，电话响了。

）2.As time goes by, I feel more and more lonely.（随着时间的推移，我越来越感到孤独。

）二、引导原因状语从句"as"可以引导原因状语从句，表示原因或理由。

例如：1.As he was not feeling well, he stayed at home.（因为他感觉不舒服，所以他待在家里。

）2.As it was already dark, we had to leave.（因为天已经黑了，我们必须离开。

）三、引导方式状语从句"as"可以引导方式状语从句，表示两个事件或行为的方式相同或相似。

例如：1.Please do it as I have shown you.（请按照我给你展示的方式去做。

）2.They treated us as if we were their own children.（他们对待我们就像对待自己的孩子一样。

）除了以上三种用法，"as"还可以引导让步状语从句、比较状语从句等。

在使用"as"时，需要注意以下几点：1."as"引导的从句通常放在主句之后，但也可以放在主句之前。

2."as"引导的从句通常用一般现在时表示将来或过去，但也可以根据需要使用其他时态。

3."as"引导的从句的语序通常是正常语序，但有时也可以使用倒装语序。

4."as"引导的从句通常表示一种事实或情况，而不是表示一种假设或条件。

(完整版)As引导从句归纳总结

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6种从句

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 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 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
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 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 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

as引导的五种状语从句

as作从属连词用时,可以引导五种状语从句。

现归纳如下：1. as表示“当……的时候”,引导时间状语从句,多强调主句和从句中的动作或状态同时发生,从句可放在主句前,也可放在主句后。

例如：As I waited at the stop, I heard a big noise. 当我在车站等车的时候,我听到一个很大的声响。

She rose up as he entered. 当他进来时,她站了起来。

2. as表示“因为”、“由于”,引导原因状语从句,其语气不如because强,通常为附加说明的理由,且是已知晓的原因,主句与从句没有逻辑上的因果关系。

例如：As she was not well, I went there alone. 因为她身体不好,所以我独自到那里去了。

As he is a tailor, he knows what to do with this material. 由于他是个裁缝,他知道怎样利用这块布料。

3. as表示“虽然……但是……”,引导让步状语从句,从句通常用倒装语序,把从句的表语、状语或动词原形放在as前面,可以用though替代。

例如：Child as he is, he knows a lot. 虽然他是个孩子,但他知道的东西很多。

Hard as it was raining, they went on working in the field. 虽然天下大雨,但他们继续在田地里干活。

4. as表示“按照”、“依照”、“像”,引导方式状语从句,从句置于主句之后。

例如：You should do as the teacher tells you.你应当依照老师所说的去做。

The absence of air also explains why the stars do not seem to twinkle in space as they do from the earth. 空气的不存在,也说明了为什么在空中星星看来并不闪烁,而不像从地球上看的那样。

as 引导的各种从句

as 引导的各种从句as 作为英语中一个非常活跃的词，其引导的从句在中学阶级较为多见，它们的种类应根据实际意义具体分析判定。

如下：一、as 充当连词，引导状语从句。

1. 引导时间状语从句，主句动作与从句动作同时发生，译为“当……的时候；一边……一边”。

如：As the students watched him quietly，he mixed the three together.当学生们静静地看着他的时候，他把这三种液体搅和在一起。

As the pupils walked along the lake，they sang happily.学生们沿着湖一边走，一边高兴地唱着。

2. 引导原因状语从句，从句所表达的原因是比较明显的，已为人们所知的。

如：As he did not know much English，he got out his dictionary and looked up the word “ cough ” .由于他英语懂得不多，就拿出字典来查“咳嗽”这个词。

As it was getting very late，we soon turned back.因为很晚了，我们很快就回来了。

3. 引导方式状语从句，此时as 可译为“如；像；按照”。

如：Remember，you must do everything as I do.记住，你们都要照我这样做。

When at Rome do as the Romans do.（谚语）入乡随俗。

I have changed it as you suggested.我已经按照你的建议把它改好了。

4. 引导让步状语从句，多用于书面语中，且须用部分倒装语序，即将从句的表语或状语等前置。

它比though 和although 引导的让步状语从句更有表现力，语气更强。

如：Poor as he was （＝Though he was poor ）he was honest.他虽然贫穷，但很诚实。

盘点as引导的六种从句

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。

as引导让步状语从句

as引导让步状语从句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。

（名词前的冠词和定冠词都去掉）如：Student as he is, he does not study hard.他虽然是个学生，却不努力学习。

4. 副词+ as + 主语+ 谓语部分。

如：Much as I admire his courage, I don’t think he acted wisely.我虽然崇拜他的勇气，但我认为他这样做是不明智的。

5. 动词原形+ as + 主语+ 谓语的另一部分（情态动词或助动词may, might, will, would等）。

如：Try as you will, you won’t be able to persuade him.不管你怎么努力，你都说服不了他。

【考例1】_____, I have never seen anyone who’s as capable as John. （上海2001）A. As long as I have traveledB. Now that I have traveled so muchC. Much as I have traveledD. As I have traveled so much【考例2】_____, Carolina couldn’t get the door open.（广东2005）A. Try as she might B. As she might tryC. She might as tryD. Might she as try。

as引导六大从句

as是考研英语中十分罕见的单词，用法灵活多样，是英语中最经常使用的词汇之一。

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，通常暗示“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应导的状语从句

as应导的状语从句
“as”可以引导状语从句，用来表示时间、原因、方式或条件。

在引导时间状语从句时，"as"通常表示“当…的时候”或“随着…”。

例如，“As I was walking to the store, I saw my friend.”（当我走向商店的时候，我看到了我的朋友。

）在引导原
因状语从句时，"as"通常表示“因为”或“由于”。

例如，“She couldn't sleep as she had drunk too much coffee.”（她喝了
太多咖啡，所以睡不着觉。

）当"as"引导方式状语从句时，通常表
示“以…方式”。

例如，“He sang as if he were a
professional singer.”（他唱歌的方式就像是一名专业歌手。

）
最后，"as"还可以引导条件状语从句，表示“如果”或“既然”。

例如，“As it is raining, I will take an umbrella.”（既然
下雨了，我会带把伞。

）总的来说，"as"引导的状语从句可以在句
子中起到丰富句子意义和结构的作用。

as引导的七种从句

as引导的七种从句as引导的七种从句As引导的从句在英语中使用非常广泛。

它可以引导时间、原因、结果、方式、条件、让步和比较等不同类型的从句。

下面将详细介绍as引导的七种从句。

1. 时间从句：as引导的时间从句表示两个事件同时发生或者一个事件发生在另一个事件之后。

例如：'As I was leaving the house, it started to rain.'(当我离开房子的时候，开始下雨。

)2. 原因从句：as引导的原因从句表示某个事件的原因。

例如：'As he was tired, he decided to go to bed early.'(因为他累了，他决定早点上床睡觉。

)3. 结果从句：as引导的结果从句表示某个事件的结果。

例如：'He failed the exam as he didn't study enough.'(他因为学习不够而考试不及格。

)4. 方式从句：as引导的方式从句表示某个事件的方式或者方法。

例如：'She cooked the dinner as her mother had taught her.'(她做晚饭的方式是按照她妈妈教的那样。

)5. 条件从句：as引导的条件从句表示某个事件发生的条件。

例如：'As long as you study hard, you will pass theexam.'(只要你努力学习，你就能通过考试。

)6. 让步从句：as引导的让步从句表示尽管某个条件成立，但是结果仍然如此。

例如：'As difficult as the task was, hemanaged to complete it.'(尽管任务很困难，但他还是完成了。

)7. 比较从句：as引导的比较从句表示两个人或事物之间的比较。

例如：'She is not as tall as her sister.'(她不如她姐姐高。

as引导的让步状语从句例句

as引导的让步状语从句例句1. As tired as I am, I will finish this project tonight.尽管我很累，我今晚还是会完成这个项目。

2. As difficult as the exam was, I managed to pass it.尽管考试很难，我还是设法通过了。

3. As much as I love chocolate, I need to eat it in moderation.尽管我很喜欢巧克力，我还是需要适量食用。

4. As busy as she is, she always finds time to help others.尽管她很忙，她总是能找到时间帮助别人。

5. As small as the room is, it feels very cozy.尽管这个房间很小，但感觉非常舒适。

6. As often as they argue, they still care for each other deeply.尽管他们经常争吵，但他们仍然非常关心彼此。

7. As far as I know, the meeting is still scheduled for tomorrow.据我所知，会议仍然定在明天。

8. As cold as it was outside, we decided to go fora walk.尽管外面很冷，我们还是决定去散步。

9. As many times as I’ve tried, I just can’t get it right.尽管我试了很多次，我就是做不好。

10. As far as the eye can see, the landscape is breathtaking.尽管眼前的景色令人惊叹，但我却感到无比渺小。

as引导的从句

As引导的从句一、As引导让步状语从句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 the past 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。

Patient as he was，he didn’t like waiting that long. 他虽说有耐心，也不愿等这么长。

As引导的各种从句归纳

As引导的从句之迟辟智美创作一、As引导让步状语从句为了帮手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，但他其实不幸福.Child as he is，he knows to help other. 他虽是个孩子，却知道帮手他人.【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.比力：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 the past few weeks.= Though heis 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. 他虽然胜利，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. Patient as he was，he didn’t like waiting that long. 他虽说有耐心，也不愿等这么长.Beautiful though the necklace was，we thought it was over-priced. 那条项链虽然很漂亮，我们认为价钱太高.【说明】其中的动词也通常为连系动词，也就是说位于句首的形容词是其后连系动词的表语.3、副词+ as / though + 主语 + 动词Much as I like Paris，I couldn’t live there. 尽管我喜欢巴黎，但我不能住在那里.Hard though they tried，they couldn’t make her change her mind. 尽管他们做了很年夜努力，却没法让她改变主意.Fast as you read，you can’t finish the book in two days. 尽管你读得很快，你总不能在两天之内就读完这本书.He was unable to make much progress，hard as he tried. 尽管他做了努力，却未能取得很年夜进步.【说明】有的辞书将 much as 作为习语看待，认为它是一个用以引导让步状语从句的复合连词.再如：Much as I admire him as a writer，I do not like him as a man. 他作为一名作家我很佩服他，但我却不喜欢他这个人.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.4、动词原形+ as / though + 主语 + 动词Object as you may，I’ll go.纵使你反对，我也要去.Try as he might，he couldn’t solve the problem. 尽管他想方设法，却未解决这个问题.Search as they would，they would find nobody in the house. 无论怎样搜查，他们在房子里仍然没有找到一个人.Dislike him as we may，we must acknowledge his greatness. 尽管我们不喜欢他，但必需供认他的伟年夜.Lose money as I did，we got a lot of experience. 钱虽然丢了，我们却获得了许多经验.Fail in the election as he did，he became famous for his fiery speech against slavery. 尽管落选了，但他却以其反对奴隶制的激烈演说而出了名.【说明】主语后的动词通常为 may，might，would，did 等情态动词或助动词(若暗示情态意义，则选用情态动词；若陈说事实，则用 did，do 等助动词).5、分词+ as / though + 主语 + 动词Raining hard as it is，I’m going out for a walk. 虽然正在下着年夜雨，我还是要出去散步.Surrounded as we were by the enemy，we managed to march forward. 虽然我们被仇敌包围着，但我们还是设法前进了.Munching the apple as he was，he had got an eye for all John’s movements. 他尽管在一个劲地嚼着苹果，但仍警惕着约翰的一举一动.6、弥补说明1）这类倒装的让步状语从句可用as， though来引导，不能用 although 来引导；可是，未倒装的让步状语从句却可用though， although来引导，而不能用 as 来引导.也就是说，although引导让步状语从句时不能倒装，as引导让步状语从句时必需倒装，而 though引导让步状语从句时可以倒装也可以不倒装.如：虽然很晚了，但我们还是继续工作.正：Late as ［though］ it was，we still went on working.正：Though it was late，we still went on working.误：Late although it was，we still went on working .误：As it was late，we still went on working.2）上面提到的倒装结构有时也可用来暗示原因，区另外法子主要看句子的内容：让步从句的内容年夜大都与主句在意义上相反，而原因从句则与主句之间有因果关系.比力：Tired as he was，he sat up late studying at night. 昨晚他虽然很疲倦了，但还是学习到很晚才睡.(表让步)Tired as he was，he went to bed early. 因为很累，所以他睡得很早.(表原因)Young as he was，he was equal to the task. 他虽年轻，却能胜任这项工作.(表让步)Young as he was，he was not equal to the task. 他因为年轻，所以不能胜任这项工作.(表原因)3）在美国英语中，人们通经常使用 as...as 引导让步状语从句.如：Cold as it was， we went out.=As cold as it was， we went out. 尽管天气冷，我们还是出去了.Successful as he is， he is not proud.=As successful as he is，he is not proud. 他虽胜利了，但不骄傲.二、as 引导定语从句as 的用法:(as 引导定语从句, 在定语从句中作主语、宾语、表语)(一) 如为限制性的，多用于the same …as ; the same as；such …as …; as many/much as；so …as等结构中.如：1. I have the same book as you (have). 我有一本和你的一样的书.Her attitude to him was quite the same as it had always been. (关系代词as和指示代词same连用, 在从句中用作表语, 先行词是same.)2.---Why didn't you mention that in face of the police just now?--- I thought it was such a minor detail as was hardly worth mentioning.We will only discuss such problems as have something to do with our own interests.Don't do such things as you are not sure about.There is no such place as you dream of in all this world.比力：I live in the same house that he used to live in.I'm wearing the same shirt as you wore yesterday.比力：Here is so big a stone as no one can lift. （定语从句）Here is so big a stone that no one can lift it.（结果状语从句）(二) 如为非限制性的，多独自引导一个定语从句，这种定语从句可置于句首，句中或句尾，译为"正如，这一点".（动词常为know, see, expect, point out, etc.）1. As we all know, smoking is harmful to one's health . (as 作宾语)=As is known to all, smoking is harmful to one's health . （as 作主语）=It's known to all that smoking is harmful to one's health .或:Smoking is harmful to one's health , as we all know .（as 作宾语）或: Smoking, as we all know, is harmful to one' health.2.He was a foreigner, as I knew from his accent. (宾语, 先行词是前面整个句子)领先行词被the same所修饰时，关系词既可以用as，也可以用that.在暗示具体事物时，有时两者有一定的区别.一般说来，暗示同一种类多用as，暗示同一事物多用that.如：This is the same instrument that I used yesterday. 这就是我昨天用过的那台仪器.This is the same instrument as I used yesterday. 这台仪器跟我昨天用过的那台一样.在笼统概念上，同种类和同一事物是没有绝对区另外，所以两个词可换用：I have the same opinion as / that you have.这里要注意的是：（1）使用as时，它引导的定语从句中的动词可以省略，但使用that时，定语从句中的动词不成省略.如：Women received the same pay as men.Women received the same pay that men received.(2) 在“the same…that”结构中，that只是用来加强语气，强调“相同”.that可以省去而不改变句子原意，甚至连名词前的same也可以省去.如：This is the same instrument that I used yesterday.= This is the same instrument I used yesterday.= This is the instrument I used yesterday.但在“the same…as”结构中，same和as都不能省略.(3) 当“the same…that”结构中的that作为关系副词用时，不成以直接与as互换.如：He lives in the same building that I live.= He lives in the same building as / that I live in.Shall we meet at the same place that we last met?= Shall we meet at the same place that / as we last met at?7. 领先行词前有such, so, as时，关系词应当用as.如：A wise man seldom talks about such things as he doesn’t understand.He spoke in such easy English as everybody could understand.At this time of the day, all buses and trolleys have to carry as many passengers as they can.It is so easy a book as every schoolboy can read.Let’s discuss such things as we can talk of freely.另需注意：This book is written in such easy English as beginners can understand.（定语从句）This book is written in such easy English that beginners can understand.（结果状语从句）。

as引导六大从句

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 mi stake 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。