as引导限制定语从句和非限制定语从句易混点讲解.doc
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as引导的定语从句
as引导的定语从句as 引导的定语从句as引导非限制性定语从句，可放在主句之前，或者主句之后，甚至可以切割一个主句。
1.as 引导限定性定语从句as引导限定性定语从句，主要用在such... as（正如）和the same as（正像）的结构中，可代替表人或物的先行词，注：在same... as结构中as也可用that代替。
A.There is such an unforgettable experience as they have.他们有着如此难忘的经历。
（此such... as 结构中，as后的句子修饰限定experience，as作宾语）B.Nobody will obey such a rule as prevents us from free.没有人会遵守这项阻止我们追求自由的规定（as 在这里作主语）C.I have never seen such a beautiful girl as she is.我从来没有见过像她这样漂亮的女孩。
（as 在此处作is 后的表语）D.This is the same name as I have heard.这个名字和我之前听过的一样。
（as作宾语）2.as引导非限定性定语从句as引导非限定性定语从句时可放在主句之前，也可位于主句之后，当然也可放在句中。
此时修饰的是整个主句，并对其进行说明。
通常在as之前有逗号。
A.Thanksgiving day has been a international festival,as we know.正如我们所知道的那样，感恩节已经成为了一个国际性的节日。
（as引导的从句修饰前面的主句，放在句后）B.As is a successful man,he makes a brilliant speech.他正如一个成功男士发表精彩的讲话。
（as引导的句子放在句前，作主语）定语从句中as的用法1.准关系代词as引导限制定语从句，用于以下3个结构中，as在从句中作主语、宾语或表语：a.so / such…asSuch people as were mentioned by him were honest. (as作主语)I’ve never seen such a clever man as he is. (as作表语)Last term our maths teacher set so difficult an (= such a difficult) examination problem as none of us worked out.b.the same…asModern statemen are often faced with the same problem as defeated the ancient Romans. (as 作宾语)I like the same book as you do. (as 作宾语)c.as…asAs many children as came were given some cakes. (as 作主语) He is as diligent a man as ever lived. (as 作主语)补充：a.such…as 与such…that的区别such…as 引导定语从句；such…that引导结果状语从句。
自用定语从句系列之2关系代词as的用法
4.as代表前面主句意思时， “正如…” ，which没有此意 思
பைடு நூலகம்
e.g. She has been late again, as was expected. Tom has made great progress, which made us happy.
5. as在从句中作主语时，后面常接行为动词的被动语态， 如be known，be said，be reported等，如从句中行 为动词是主动语态，一般要用which作主语。
6.如果主句的内容对从句内容起着消极作用，或者说导致 的结果，则用which.
a. He cheated his friend of much money, which was very disgraceful.
b. He came back late, which made his mother worried.
as与which引导的定语从句
He failed to the exam, as (=which) is natural. Grammar is not a dead rule, which (=as) I have said before
As we all know, his parents were killed in the war. As we all know, the earth is round.
Exercises（1）:
1.Such teachers _a_s___ Tom think Jane is bright.
2.I’ll buy
bike___a_s__ I lost yesterday.
3.Catch the thief,for he is riding the same
பைடு நூலகம்
e.g. She has been late again, as was expected. Tom has made great progress, which made us happy.
5. as在从句中作主语时，后面常接行为动词的被动语态， 如be known，be said，be reported等，如从句中行 为动词是主动语态，一般要用which作主语。
6.如果主句的内容对从句内容起着消极作用，或者说导致 的结果，则用which.
a. He cheated his friend of much money, which was very disgraceful.
b. He came back late, which made his mother worried.
as与which引导的定语从句
He failed to the exam, as (=which) is natural. Grammar is not a dead rule, which (=as) I have said before
As we all know, his parents were killed in the war. As we all know, the earth is round.
Exercises（1）:
1.Such teachers _a_s___ Tom think Jane is bright.
2.I’ll buy
bike___a_s__ I lost yesterday.
3.Catch the thief,for he is riding the same
as引导的非限制性定语从句
as引导的非限制性定语从句：1：as引导限定性定语从句，常用于以下句式，其中关系代词在从句中担当主，宾，表语：①so/as/such+名词+as…像……一样的，像……之类:We have found such materials as are used in their factory.These houses are sold at such a low price as people expected. (00上海)This book is not such as I expect.Such things as you described are rare now. (四校联考)He isn’t such a man as you described.He is such a lazy man as nobody wants to work with (成都诊断)=he is such a lazy man that nobody wants to work with him.I want to have such a dictionary as he has.I have bought such a watch as was advertised on TV.Mount Wuyi is such an attractive place of interest as everyone likes to visit. (福建质检)Such money as he earned was spent on spirits and tobacco.He was not half such a coward as we took him for.②the same +名词+as 和……同样的:He is not the same man as he was /used to be.The west is not the same as it was 20 years ago.I like the same book as you do .I shall do it in the same way as you did.This is the same pen as I lost yesterday.Is this the same mosquito as bit you just now?2: as引导的非限定性定语从句，指代整个主句的内容，但不同于which的是，它引导的定语从句既可以位于主句的前面，也可以位于主句的后面。
as引导限制性定语从句
as引导限制性定语从句精选as引导限制性定语从句AS是一个英语单词，意思有如同、例如等，可作副词、介词、连词、代词使用。
下面店铺为大家分享as 引导限制性定语从句，欢迎大家参考借鉴。
as引导限制性定语从句篇1一、AS引导限制性定语从句AS引导限制性定语从句时,通常和such,the same,as(so)等连用,构成such～as/such as,the same～as/the same as,as(so)～as等结构,在从句中可作主语,宾语和表语。
1. such～as/such as意为“～的那种～,像那样的”，such～as/such as引导限制性定语从句时，既可指人，也可指物。
such用于名词之前时，具有形容词性质;such单独使用(即后面不接名词)时，具有代词性质。
Don’t trust such men as praise you to your face.(as作主语) 不要相信那种当面吹捧你的人。
You should read only such books as you can understand without much difficulty.(as作宾语)你应当只读那些你读起来不太难懂的书。
Associate with such as will improve your manners.(as作主语) 要和能改善你的言行的那种人结交。
2. the same～as/the same as意为“与～同样的”，和such一样，the same既有形容词作用，又有代词性质。
We have arrived at the same conclusoin as they have.(as作宾语)我们已得出和他们同样的结论。
比较：the same～as和the same～that不同，前者是“同那一个相似”，后者是“正是那一个”。
如：This is the same watch as I lost.这同我丢的`那块表一样。
as引导的定语从句辨析
as引导的定语从句辨析定语从句一直是学生在学习英语时的重点和难点，而学生对as引导的定语从句与其他相似的从句更容易混淆，现就它们作一简单的归纳与辨析。
一、as引导限制性定语从句关系代词as 可以引导限制性定语从句，在从句中可作主语、宾语或表语，但as只用在“the same…as…”“such … as…”“ so…as…”和“as…as…”结构中。
例如：I’d like to use the same recorder as is used in class. （as 在从句中作主语）He is such a man as is always ready to help others.（as在从句中作主语）I am not so strong a man as I was.（as 在从句中作表语）She will marry as rich a man as she can find.（as 在从句中作宾语）辨析1. 当先行词被the same 修饰时用as 与that引导定语从句的比较as引导的定语从句表示“相似”意义，即主句与从句所讲的是同类的人或事物，而that引导的定语从句表示“同一”意义，即主句与从句所讲的是同一个人或事物。
例如：She wore the same （= the same kind of）dress as her younger sister wore. （她穿着跟她妹妹所穿的一样的连衣裙。
）She wore the same （= the very ）dress that she wore at Mary’s wedding. （她穿着她在玛丽婚礼上穿过的同一条连衣裙。
）辨析2. “such / so… as …” 与“such / so…that …” 结构的比较在“such / so… as …” 结构中，as 引导定语从句并在从句中作主语、宾语或表语，而在“such / so…that …”结构中，that 引导结果状语从句并在从句中不作任何成分。
非限制性定语从句及As 的用法例
非限定性定语从句非限定性定语从句的作用是对所修饰的成分作进一步说明，通常是引导词和先行词之间用逗号隔开，将从句拿掉后其他部分仍可成立1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分2.当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如：Charles Smith, who was my former teacher, retired last year. 查理·史密斯去年退休了，他曾经是我的老师。
My house, which I bought last year, has got a lovely garden.我去年买的的那幢房子带着个漂亮的花园。
This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。
3.非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如：He seems not to have grasped what I meant, which greatly upsets me.他似乎没抓住我的意思，这使我心烦。
Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。
4. 有时as也可用作关系代词5. 在非限定性定语从句中，不能用关系副词why和关系代词that，而用who, whom代表人，用which,whose代表事物，如果需要用why，可用for which代替.；As 的用法例1. the same… as；such…as 中的as 是一种固定结构, 和……一样……。
I have got into the same trouble as he (has).例2. as可引导非限制性从句，常带有'正如'。
2019-初中英语定语从句知识点：As在定语从句中的用法-推荐word版 (1页)
2019-初中英语定语从句知识点：As在定语从句中的用法-推荐word版
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初中英语定语从句知识点：As在定语从句中的用法
1. 引导限制性定语从句和非限制性定语从句
(1) as 多与 such 或 the same 连用，可以代替先行词是人或物的名词。
(2) as 也可单独使用，引导非限制性定语从句，作用相当于 which 。
例如：
The elephants nose is like a snake , as anybody can see .
(3) the same that 与 the same as 在意思上是不同的。
2. As 引导的非限制性定语从句的位置
as 引导的非限制性定语从句位置较灵活，可以位于主句前面.中间或后面，一般用逗号与主句隔开，但 which 所引导的非限制性定语从句只能放在主句之后。
例如：
(1) As is expected , the England team won the football match .
(2) The earth runs around the sun , as is known by everyone .
返回：初中英语知识点详解定语从句篇。
as引导方式定语从句
as引导方式定语从句as引导方式定语从句as是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。
分享了as引导方式定语从句的用法解释，欢迎阅读！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。
定语从句中as的用法总结
定语从句中as的用法总结定语从句中的as可以作为关系代词或连接词。
1.作为关系代词：-在非限制性定语从句中，用于表示身份、职业、国籍等方面的同一性或相似性关系。
例如：She works as a teacher, as her mother does.（她像她妈妈一样，是个老师。
）-在限制性定语从句中，用于指代整个主句的内容，相当于“which”或“that”。
例如：The hotel, as I mentioned earlier, is located in the city center.（就像我之前提到的，那家酒店位于市中心。
）2.作为连接词：-表示原因或理由，相当于“because”、“since”或“for”。
例如：He couldn't come to the party, as he was busy with work.（他因为工作忙，所以不能来参加派对。
）-表示方式或方式，相当于“in the way that”或“as if”。
例如：He did the work as instructed.（他按照要求完成了工作。
）-表示“正如……一样”，相当于“just as”。
例如：As many people say, laughter is the best medicine.（就像很多人说的那样，笑是最好的药。
）另外，形容词、副词或介词短语也可以用as来引导定语从句：-形容词：such as、same as等（表示“像……这样的”）例如：He likes fruits such as apples and oranges.（他喜欢诸如苹果和橙子之类的水果。
）-副词：as soon as、as far as等（表示“尽早”、“就……来说”）例如：I will let you know as soon as I receive the package.（我一收到包裹就通知你。
2021考研英语：as引导的各类语法从句
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。
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as引导限制定语从句和非限制定语从句易混点讲解高考英语考试中有很多考察单词词性和用法的题型，要想轻松解答这类题大家必须要复习好高考英语考试大纲要求掌握的单词知识点，为此下面为大家带来2017年高考英语辅导：as引导限制定语从句和非限制定语从句易混点讲解，希望大家能够认真掌握这些单词。
1. 方式状语从句:方式状语从句通常由as, (just) asso, as if, as though 引导。
2.1)as引导行为方式状语从句时,意为如同?按照的方式(样子,办法)?这种从句常位于主句之后?例如: You must try to hold the tool as I do. 你必须像我这样拿工具?
3. Leave the things as they are. 别动这些东西? We must do as the Party tells us (to do). 我们必须按照党的指示办事?
4. 2)(just) asso结构中位于句首，这时as从句带有比喻的含义，意思是正如，就像，多用于正式文体.
5.例如：Always do to the others as you would be done by. 你希望人家怎样待你，你就要怎样待人。
As water is to fish, so air is to man. 我们离不开空气，犹如鱼儿离不开水。
6. Just as we sweep our rooms, so we should sweep backward ideas from our minds. 正如打扫房屋一样，我们也要扫除我们头脑中落后的东西。
7. 2) as if/though引导的方式状语从句比较容易区分,这里不做解释
8.as引导限制性定语从句时,构成the same ... as ..., such ...as ..., as
many (much, few, little) ... as ...等结构? as可替代先行词,在从句中作主语?表语?宾语或状语?
9. 例如: He isnt the same person as he used to be. 他不再是过去那个样子了?
10. I have never heard such a story as he is telling. 我从来没有听见过像他正在讲述的这种故事?
11. Here is a bottle of pure water. You may use as much of it as you need. 这里有一瓶纯净水,你需要多少就用多少?
12. This is the same watch as I have lost. 这块表和我丢失的那块表一样?
13. In those days, many youths lived in the same way as the villagers did in the mountains. 那些日子里很多青年人跟山区的老百姓一样生活?
14. as引导的非限制性定语从句,可以修饰整个主句和主句中的一部分?从句可位于主句之前?句中或主句之后,通常用逗号将其与主句隔开?这时as可译为正如?正像
15. ?例如: As is reported in the newspaper, talks between the two countries are making progress. 正如报纸上报道的那样,两国之间的会谈正取得进展?
16. He is an Englishman, as I know from his accent. 从他的口音,我知道他是英国人?
17. As was usual with him, he went out for a walk after dinner. 像往常那样,他吃完饭后就出去散步了?
18. As is often the case, we have overfulfilled the production plan this year. 像往常一样,我们今年又超额完成了生产计划? 19. This machine, as might be expected, has stopped operating. 正如人们所料,这台机器已停止转动了? 20. He came very early this morning, as (was) usual. 像往常一样,他今天早上来得很早?
21.常见的这种定语从句还有: as has been said before(如前所述); as is mentioned above(如上面提到的); as may be imagined(正如可想象的那样); as is well known to us all(众所周知); as (sb) all know(众所周知); as often happens(正如经常发生的那样); as has already been pointed out(正如已经指出的那样); as we all can see(正像我们都能看到的那样)等? 2017年高考英语辅导：as引导限制定语从句和非限制定语从句易混点讲解为大家带来过了，单词的词性和用法是高考英语考察的重要内容，希望大家在复习的时候能够多下功夫。