as_在定语从句中用法
as在定语从句中的用法
关系代词as 引导的定语从句1、as 可以在定语从句中做主语或宾语，代表前面整个句子。
如：He married her, as was natural.他跟她结婚了，这是很自然的事。
He is honest, as we can see.他很诚实，这一点我们看得出来。
2、as 引导的非限制性定语从句可以放在主句之前、主句之后，甚至还可以分割主句。
另外，as 常常有“正如、正像”的含义。
如：As is known to all, China is a developing country.众所周知，中国是发展中国家。
He is from the south, as we can know from his accent.他是南方人，从他的口音我们就可以知道。
John, as you know, is a famous writer.正如你所知，约翰是个著名作家。
3、当先行词受such, the same 修饰时，关系词常用as。
如：I’ve never heard such stories as he tells.我从未听过象他讲的这样的故事。
He is not such a fool as he looks.他可不象他看上去的那样傻。
This is the same dictionary as I lost last week.这部词典跟我上星期丢失的一样。
注意：当先行词受the same 修饰时，偶尔也用 that引导定语从句，但与as引导的定语从句意思有区别。
如：She wore the same dress that she wore at Mary's wedding.她穿着她在玛丽婚礼上穿过的那个同一条连衣裙。
She wore the same dress as her younger sister wore.她穿就像着跟她妹妹所穿的一样的连衣裙。
as用在定语从句中的用法
as用在定语从句中的用法一、AS用在定语从句中的基本用法与关系代词用法区别在英语中，定语从句通常由关系词引导。
这些关系词包括that、who、whom、whose和which等。
然而，在某些情况下，我们可以使用介词as来引导定语从句，表示“...的”。
本文将介绍AS在定语从句中的基本用法，并与其他关系代词进行比较。
1. AS作为关系代词引导定语从句AS在定语从句中可以指人或物。
当AS引导的定语从句修饰人时，作为主格或宾格，它可以替代一个具体名词或指示形容词短语。
例如：- She works as a teacher, which I admire.（她是一名教师，我很钦佩）- My neighbor's son, as I previously mentioned, is a doctor.（我之前提到过的邻居儿子是医生）2. AS和WHEN对时间进行修饰除了指人之外，AS还可用于修饰时间的定语从句。
它可以替代表示具体时刻或事件的名词。
例如：- September 4th, as you might remember, was our wedding anniversary.（9月4日是我们的结婚纪念日，你可能记得）- He always wakes up early, as his alarm clock rings.（当闹钟响起时，他总是醒得很早）3. AS和THAT的区别AS所引导的定语从句与由THAT引导的定语从句在用法上有所不同。
AS常用于对一个已知事实或情况进行补充说明，而THAT更常用于简明地陈述或描述事实。
例如：- He referred to the book as a valuable resource.（他把这本书称为宝贵的资源）- The fact that he won the award surprised everyone.（他获奖的事实让所有人都感到惊讶）二、AS用在定语从句中的扩展应用除了上述基本用法之外，AS还有一些特殊的扩展应用，我们将在以下几个方面进行讨论。
as 在定语从句中的用法
as 在定语从句中的用法在定语从句中，"as" 可以作为关系代词或关系副词使用。
1. "as" 作为关系代词：当"as" 作为关系代词时，它引导一个非限制性定语从句，用来修饰前面的名词，并且在从句中起到主语的作用。
例如：- He works as an engineer, as his father did. （他做工程师，就像他父亲一样。
）在这个例子中，"as" 引导的定语从句修饰名词"engineer"，并且在从句中作为主语。
进一步解释这个例子，可以将定语从句分解为两个简单句子：- He works as an engineer.- His father did (work as an engineer).2. "as" 作为关系副词：当"as" 作为关系副词时，它引导一个限制性定语从句，用来修饰前面的名词，并且在从句中起到比较程度、原因、方式、时间等方面的作用。
比较程度：- She is not as tall as her sister. （她不如她姐姐高。
）在这个例子中，"as" 引导的定语从句修饰名词"tall"，表示比较程度。
原因：- I couldn't sleep last night, as I drank too much coffee. （我昨晚睡不着觉，因为我喝了太多咖啡。
）在这个例子中，"as" 引导的定语从句修饰名词"I"，表示原因。
方式：- The teacher explained the math problem as clearly as possible.（老师尽可能清楚地解释了这道数学题。
）在这个例子中，"as" 引导的定语从句修饰名词"clearly"，表示方式。
定语从句中as的用法总结
定语从句中as的用法总结
1. 用于限制性定语从句中，表示“正如，就像”，引导定语从句修饰前面的整个句子或某个先行词。
例如：She dressed as a boy. 她打扮成男孩。
2. 用于非限制性定语从句中，表示“正如，就像”，引导定语从句修饰前面的整个句子或某个先行词。
例如：As is known to all, the moon is a satellite of the earth.
众所周知，月球是地球的一颗卫星。
3. 用于限制性定语从句中，表示“像……一样”，引导定语从句修饰前面的先行词。
例如：The material is used in a way as the book is.
这种材料像书本一样被使用。
4. 用于非限制性定语从句中，表示“像……一样”，引导定语从句修饰前面的先行词。
例如：His wife, as stated in the marriage contract, should be able to inherit all his property.
正如婚姻合同所规定的，他的妻子应该能够继承他所有的财产。
5. 用于“the same ……as”结构中，表示“与……一样”。
例如：This is the same book as you read last week.
这本书与你上周读的那本一样。
定语从句中as 的用法及例句
定语从句中as 的用法及例句定语从句中"as"的用法及例句一、引言在英语语法中，定语从句是一种常用的修饰手段，它可以为名词或代词添加更多的描述和限定。
而其中一个常见的连接词就是"as"。
本文将详细介绍定语从句中"as"的用法，并提供一些例句来帮助读者更好地理解和运用。
二、as作为关系副词引导定语从句1. "as"在定语从句中起到限制性关系副词的作用。
它引导了一个对主句所描述事物进一步解释和说明的从句。
例如：- The hotel, as I mentioned before, is located in the city center.（正如我之前提到过的，这家酒店位于市中心。
）- I love the movie "The Shawshank Redemption", as many people do.（我喜欢电影《肖申克的救赎》，像很多人一样。
）2. 在类似比较级、数词等结构中，也可以使用"as...as..."进行比较。
例如：- He is not as tall as his brother.（他没有他哥哥高。
）- As many as ten students were absent from today's class.（多达十名学生今天旷课了。
）三、根据先行词不同类型的例句下面将分别给出"as"引导定语从句的几种情况以及相应的例句。
1. "as"引导说明职业、身份或特征的定语从句。
例如：- Mr. Smith, as our English teacher, is always patient and helpful.（作为我们的英语老师，史密斯先生总是耐心和乐于助人的。
）- Mary, as a doctor, has saved many lives in her career.（作为一名医生，玛丽在她的职业生涯中挽救了许多生命。
定语从句中as的用法
定语从句中as的用法定语从句中as的用法在定语从句中，as有样的作用呢?下面是店铺为大家带来的定语从句中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。
They talked in such simple English as children could understand.他们用孩子们能听懂的简单的交谈。
They talked in such simple English that children could understand it.他们用十分简单的英语交谈，连孩子们都能听懂。
(完整版)as在定语从句中的详细用法
as引导的定语从句(1）as引导的定语从句修饰表人或物的先行词，即先行词可以是人也可以是物；在定语从句中可以做主语、宾语或表语；常用于the same…as…/such…as…/as(so）…as…句型，as不论在定语从句中作何成分,均不能省略。
①Such teachers as know Tom think him bright。
先行词为人such teachers， as作主语②I’ll buy the same bike as I lost yesterday。
先行词为物the same bike,as作宾语，指同一类事物※此时注意和the same … that …引导的定语从句的区别It’s the same bike that I lost yesterday。
that引导定语从句，作宾语，指同一个事物※She wore the same dress that she wore at Mary's wedding. (the same…that…特指同一个)她穿着她在Mary婚礼上穿过的同一条裙子。
She wore the same dress as her young sister wore。
（the same…as …泛指同一类)她穿着和她妹妹所穿的一样的裙子。
That is the same watch as I lost. 那块手表和我丢失的一模一样。
（the same…as …泛指同一类)That is the same watch that I lost. 那就是我丢失的那块手表。
（the same…that…特指同一个）③The school is just the same one as it was 10 years ago.先行词为物the same one (school), as作表语It’s so heavy a box as no one can lift。
定语从句as的三种用法
定语从句as的三种用法定语从句 "as" 有以下三种用法：1. 引导限制性定语从句：这种用法中，as在从句中作主语、宾语或表语。
例如：The car, as you know, cost me a lot of money. (你知道，那辆车花了我很多钱。
)I'll take the book, as you suggested. (按照你的建议，我会拿那本书。
)The child, as is well known, needs love and care. (众所周知，那个孩子需要爱和照顾。
)2. 引导非限制性定语从句：这种用法中，as在从句中作主语、宾语或表语。
例如：My sister, as you know, is a doctor. (你知道，我姐姐是一名医生。
)The book, as I have said, is very interesting. (正如我所说的，这本书非常有趣。
)The film, as you can imagine, was very emotional. (正如你可以想象的，这部电影非常感人。
)3. 引导方式状语从句：这种用法中，as在从句中作方式状语，表示“正如”、“就像”的意思。
例如：He did it, as we had expected. (他按照我们预期的那样做了那件事。
)She spoke to the camera, as if she was addressing a crowd of people. (她对着镜头讲话，就像是在向一群人发表演讲一样。
)。
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as和which的差别
• as 引导的从句位置灵活，多放句首，并有 逗号隔开， which一般多放主句后面（见报 纸）
as 用在固定结构中 如：the same…as… such…a样的
I use the textbook.
You use the same kind of text book, too.
二、非限制性定语从句不能用why引导, 要用for which代替why。 1. I had told them the reason, for which I didn't attend the meeting. 我已经把理由告诉了他们，为此我没有 去开会。 2. I had told them the reason why I didn't attend the meeting. 我告诉了他们我不去开会的理由。 (限制性定语从句“the reason why ...”是 常见搭配。)
I use the same textbook as you do.
= I use the textbook just like the one that you do. the same …as 和…一样的
I stay in this classroom. You all stay in this classroom too.
Simon accepted as much advice as Mr Yang gave to him. as…as… 像….一样…..
总结 非限制性定语从句 应注意以下几点：
一、非限制性定语从句通常不能用that 引导。 1. I like the book, which was bought yesterday. 我喜欢这本书，这是昨天买的。 2. I like the book which/that was bought yesterday. 我喜欢昨天买的那本书。
三、非限制性定语从句置于句首时，不 能用which引导。关系代词as引导非 限制性定语从句位置比较灵活，可以 放主句前，也可以放主句后。 1. As I expected, he didn't believe me. 正如我所预料的，他不相信我。 2. She heard a terrible noise, which brought her heart into her mouth. 她听到一个可怕的声音，这让她把心都 提到嗓子眼了。
I stay in the same classroom as you all do.
她和我坐在同一排。
这是一本年轻人都喜欢的书。
This is such a book as all young people like. 这是一本如此有趣的书以至于年轻人都喜欢。
This is such an interesting book that all young people like it.
There is so warm a house as we want to live in. 这里有如此暖的房子，我们都想住在里面。
so…as… 如此的…
他有如此难的一个问题，我们没有人能解决。
He has so difficult a problem, as none of us can solve.
四、在非限制性定语从句中，指人的关 系代词作宾语时，只能用宾格whom; 不能用who替换，也不能省略。 1. Do you know Tom, whom we talked about? 你认识汤姆吗? 我们谈到过他。 2. This book, which you can get at any bookshop, will give you all the information you need. 这本书会给你提供所有你需要的资料， 它在任何一家书店都能买到。 (非限制性定语从句中引导词在从句中作
as 用在非限制性定语从句中, 有“正如…” “正像…” 之意。
As is often the case, 这是常有的事
As is known to us all，众所周知
As is said/mentioned above,
As often happens, 正如经常发生的那样 As has been pointed out 正如已指出的那样 As we all know, body language sometimes is the key to successful communication.
五、which可指前面整个句子。 The sun sends out light and heat, which makes it possible for living things to exist on the earth. 太阳发出光和热，这使得生物能够在地球 上生存。 which可代替句子, 用于非限制性定语从 句。that不能用于非限制性定语从句。