(完整版)定语从句as和which的区别讲义
定语从句中as和which
定语从句中as和which定语从句中as和whichas和which都可以引导非限制性定语从句，先行词为整个主句或主句中的一部分内容，先行词在定语从句中作主语、宾语或表语，as 与which均不可省略，有时两者可以互换。
下面店铺为大家分享定语从句中as和which，欢迎大家参考借鉴。
只用as而不用which：一、当定语从句置于主句前面时：例：As you see, the Chinese people are hard-working. (定语从句在句首)你知道，中国人民是勤劳的。
注意下面句子的多种表达方法：众所周知，月球每月绕地球转一圈。
1.As is known to everybody, the moon travels round the earth once every month.2. The moon travels round the earth once every month, as/which is known to everybody.3. It is known to everybody that the moon travels round the earth once every month.4.What is known to everybody is that the earth travels round the earth once every month.(后两句属名词性从句范畴)二、先行词做主语且定语从句为被动语态时：此时，从句谓语通常为： be known, be said, be reported， be announced, be mentioned等。
如果从句是主动语态，一般用which 作主语。
例1：She has been absent again, as is expected.她又缺席了，这在预料之中。
例2：Tom has made rapid progress, which makes me veryhappy.汤姆进步很快，这使我很高兴。
高一英语as与which引导的定语从句区别课件(共15张PPT)-经典通用课件资料
4、缩放时，按Shift键及鼠标点图片选框的角部，避免变形 5、胶片尽量使用此图库，使公司资料风格统一
常用字列表 Thanks
作图元素
小区、业务平台等的表示图标，上面放终端或产品示意图
生词…短语…句型
Unit 1
2021/10/10
15
图库用法指导
1、此图标库在色彩方面大致分为鲜亮色(符号及元素)和沉稳色(各终端及实物场景)，使 用时，注意鲜亮色和沉稳色要平衡，画面不要全是鲜亮色或者全是沉稳色。
2、由于各终端及实物场景的颜色是沉稳色，所以连接它们的组网线要粗一些、颜色可 以鲜一些，以产生对比，求得视觉平衡。
7
(5) 当非限制性定语从句的引导词前面有介词时，只能用which, 而不可用 as。如： He has a new computer, for which he paid nearly ten thousand yuan. 他有一台新电脑，这台电脑花了
他将近一万元。
2021/10/10
8
(6) 当关系代词代替主句中的宾语从句或复合结构(如：宾+补；不定式短语；动词-ing形式短语等) 时，一般只能用 which, 而不用 as。如：
11
(9) 当关系代词仅代表主句中单个的名词时，一般只用which, 而不用as。如： He sent me a beautiful present, which I valued very much. 他给寄来了一件精美的礼物，我对它非常珍视。
2021/10/10
12
(10) as 在非限制性定语从句中，还常跟such连用。如： There was a look of love in the teacher’s eyes, such as mothers have for their children. 老师眼里
as和which引导定语从句的区别
as和which引导定语从句的区别as和which引导定语从句的区别导语：As 和which都可以引导非限定性定语从句，在用法上有一些区别。
欢迎阅读！1.as 和which都可以在定语从句中作主语，宾语，既可修饰一个词也可修饰前面的整个句子。
A.She accepted his proposal, as(which)was natural.她接受了她的求婚，这是自然而然的。
B.The boy is pretty handsome, as(which)we can see in our classroom.这个男孩非常的帅气，正如我们在教室看到。
2.as 在非限定性定语从句中的使用2.1 as可以放在主句之前，主句之后，也可以放在句中，可以说位置很灵活。
但是which常用在主句之后A.As we know,technology just like a engine to push the development of economics.众所周知，技术就像是引擎推动着经济的'发展。
B.The diva,as you know, is famous throughoutthe world.这个女歌剧演唱家，正如你知道的，在全世界都出名。
C.He has stood her up, which I don`t believe.他没有赴约，这事我不相信。
2.2 as与the same，such 连用时，用as。
A.This is the same phone as I have borrowed from my sister.这个手机和我向我姐姐借的一样。
B.I have never had such a chance to make a speech as I always imagined.我从没有这样一个机会去演讲，正如我一直想象的那样。
2.3在从句中谓语动词为被动语态，缺少主语时用as，不用which。
as_which引导定语从句的区别
众所周知，which与as都可以引导定语从句，但它们有许多用法上的区别，现就此简要分析如下：一、which与as引导非限制性定语从句的区别：1．Which只能放在主句后面，而as引导的从句位置相对较灵活，可在前，可在中，也可在后。
例如：A) As he realized, I was very useful to him.(在前)B) Air, as we know, is a gas.（在中）C) He was a foreigner,as I know from his accent.(在后)2.在which引导的定语从句中，谓语动词若是am, is, are则这些系动词不能省略；而as后面若是这种情况，则可以省略。
例如：A) He is a teacher, as (is) clear from his manner.(is可以省略)B) He said he had never seen her before, which was not true.(was 不可省略)3.当which引导的从句在意义上近乎并列关系时，可以用and this，and that 代替，意思是“这件事”例如：A) He changed his mind, which(and this, and that)made me very angry.他改变了主意，这使我很生气。
B) She has married again, which(=and this, and that)was unexpected.出乎意料的是，她又结婚了。
而as主要起与上下文连接的作用，表达说话人的看法、观点，并指出主句内容的出处或根据等，例如：C）Einstein, as we know, is a famous scientist.爱因斯坦，众所周知，是位伟大的科学家。
D）As is announced in today’s newspaper, we must improve our style of work.今天的报纸上说，我们必须改进工作作风。
as引导定语从句与which
as引导定语从句与whichas引导定语从句与whichas引导定语从句与which关系代词as与which引导的非限制性定语从句，其先行词都可以是整个主句，指代主句的整个意思。
但as和which具有不同的词义、句法和用法。
1. as引导的从句表示说话人的看法、态度、解释或评论引导定语从句时，as仍具有正如，像，由可知等意思，翻译时有时可不必译出。
as定语从句常含有这些动词：see, know, hear, watch, remember, say, tell, show, expect, guess等，这类动词与as连用几乎成了一种固定搭配。
as引导的此类从句可以置于句首、句中或句尾。
如：The famous magician Liu Qian, as we all know, is from Taiwan. 众所周知，著名魔术师刘谦是台湾人。
There is a net bar around here, as I remember. 我记得这儿附近有一家网吧。
As is often the case, girls like dolls while boys like guns. 女孩子喜欢玩具而男孩子喜欢枪，这是常见的情况。
2. which引导的从句对主句所叙述的`事情进行补充说明，表明事物的状态或结果which此时指前面主句所提到的这件事，常译为这一点，这件事等。
这时它所引导的从句与主句之间常含有并列、因果关系。
注意，它引导的从句不像as那样位置灵活，它只能位于主句的后面。
练习题：1）Alice received an invitation from her boss, ___came as a surprise.A. itB. thatC. whichD. he答案C. 此为非限定性从句，不能用 that修饰，而用which.，it 和he 都使后句成为句子，两个独立的句子不能单以逗号连接。
定语从句中关系代词 as, which的区别
关系代词as, which的区别
5.从句内容为否定意义时，常用which： The young lady married an old man with a lot of money， which is disgraceful（不光彩的）. 6.如从句中行为动词是含有复合宾语结构，一般 要用which作主语： Tom has made great progress, which mቤተ መጻሕፍቲ ባይዱde us happy.
定语从句中关系代词 as, which的区别
关系代词as, which的区别
1.放句首或句中引导从句，只能用as; 从句在句末，无其他限制条件时，既可用 which，也可用as。 句型模式为：as …,主语＋ 谓语； 主语， as…， 谓语； 主语＋ 谓语，as/which… 2.当从句和主句语义一致时，用as，反之则用 which: She has married again, as was expected. She has married again, which was unexpected.
关系代词as, which的区别
[备注] (1)the same ...as ...表示相似的东西 the same ...that ...表示同一人或物 This is the same knife as I lost. 这把小刀和我丢的那把一样。 This is the same knife that I lost. 这把小刀就是我丢的那一把。 （2）such ...as 像……那样(定语从句) so/such ...that 如此……以至于…… (结 果状语从句)
关系代词as, which的区别
4.固定搭配：
在引导词＋be ＋done 结构中省略be时，只能 用as： The material resists heat （耐热），as shown in the experiment. 常见固定用法as is well known, as is often the case, as often happens, as has been said before, as has been pointed out, as can be seen等常用as，意为“正如” ： The air show（航空展 ） being held in Zhuhai is fantastic, as can be seen. It never rains but pours in this area, as is often the case.
as与which的区别
as 与which 的区别关系代词as 与which引导非限制性定语从句可以用整个主句作为其先行词，指代上面或下文所说的一件事。
但何时用as，何时用which，初学者在实际运用时常出现差错。
现就as 与which在引导这种定语从句时所出现的不同词义和句法特点进行对比、分析如下。
一、as引导的从句表示说话人对话语的看法、态度、解释或评论。
一般有以下特点：1、此时的as仍具有“正如、象、由……而知、与……一致”等某些作连词时的语义。
翻译时有时可不必译出。
如：Shakespeare is a famous writer, as we all know. 莎士比亚是著名的作家，这众人皆知。
She is very patient, as is shown in her work. 她很耐心，正如她工作中所表现出来的一样。
2、在句法上，as常用作一些实意动词(如see, know, hear, watch, remember, say, tell, show, expect, guess等)的宾语，这类动词与as几乎成了一种固定搭配。
如：Einstein, as we know(=as is well known), is a famous scientist. 众所周知，爱因斯坦是一位著名的科学家。
There was a net bar around here, as I remember. 我记得这儿附近有一家网吧。
3、当从句的谓语动词是否定形式或从句谓语动词带的是一个复合宾语结构时，一般用which而不宜用as。
如：You pretended not to know me, which I didn’t understand. 他假装不认识我，我真不明白。
He admires everyone in the class, which I find quite strange. 他羡慕班里的每个学生，我认为太奇怪了。
as 和which 引导定语从句的异同
as 和which 引导定语从句的区别一、相同点：两者引导非限制性定语从句时，可指代主句中的部分或整个句子的内容，在从句中做主语，宾语或表语，位于主句之后有时可互换。
The meeting was put off, as /which was exactly what we wanted.He was a doctor, as/which I knew from his manner.注：which 代表整个句子，还可用于in which case, at which point, on which occasion等。
I may have to work late, in which case I’ll telephone you.我可能得晚点下班，那样我会给你打电话的。
The machine may be out of order, in which case it will be repaired at once.Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight.二、不同点：1. 在限制性定语从句中，当先行词被the same, such ,as ,so修饰时，要用as代替who，whom，which 或者that引导定语从句。
Such men as heard him were deeply moved.听过他说话的人，都会深受感动。
（as在定语从句中作heard的主语）I've never heard such stories as he tells.我从未听过像他讲的这样的故事。
（as在定语从句中作tell的宾语）He lifted so heavy a stone as no one else can lift.他搬起别人都搬不起的大石头。
定语从句中as与which的区别
主语
主句后
归纳总结
相同之处：
定语从句
当先行wh词ic指h整个主句的a意s 思时, 这类非限制性___________只能由 _________或 ________来引导。
两者的区别在于：
主句后
• 2.
_w_w__h__h_i_c__i_hc常_h_译引__主作导__句_“的_前_这定_、_”语。中;从（而、句位_后只_置__能）a常s位译于作_“___正__如_,”而,a且s引多导与的se定e,语ex从p句ec可t,位于
in the newspapers, talks countries are making
progress.
10.A_s__is known to all, the moon travels
round the earth once every month.
灵活运用:《名 师》P219
一、单句填空 用which 或
单击此处添加副标题
which 和as引导非限制性定语从 句的区别
语法活用
which 和as引导非限制性定语从句 的区别
熟读深思
朗读以下各句, 注意划线部分, 并思考： which和as引导的非限制性定语从句
有何区别？（位置含义）
主语
• As is known to us all, the earth moves
5. as常用于固定搭配中:as is often the case (这是常有的事), as we
expected(不出所料); as often happens (正如经常发生的那样)；as
is known to all(众所周知); as has been said before (正如以前所
as与which的区别
注意区别：
the same...as 相同物体 the same...that 同一物体 She wore the same dress as her younger sister wore. She wore the same dress that she wore at Mary's wedding.
Kate was late for school , as语义与主句一致, which无此限制
She has married again, which/as was expected. She has married again, which was unexpected.
一、as和which引导非限定性定语从句的区别
1、从句位置不同 as : 句首、中、后 which ：主句或先行词之后，不位于句首
1) She told me she won the match , which was a lie. 2)As is known to all, fish can’t live without water. 3)Air, as we know, is gas. 4)He was a doctor, as I knew from his manner.
as 有正如….那样的意思。
（2013, 山东）You’ll find taxis waiting at the bus station ＿＿ you can hire to reach your host family.
A.which B.where C.when D. as 句意：你会发现出租车在车站等候，你可以租一辆到你 的寄宿家庭。本题考查限制性定语从句
as 引导限定性定语从句，先行词的前面常有the same, such ,as ,so修饰
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
名词性从句区别名词性从句是一种具有名词功能的非独立分句，可以表示：事实和问题。
1.连接词有：that whether 和lf2.连接代词有：who whom whose which what 等3.连接副词有：when where why how 等另外whatever whoever whichever等也可以引导主语和宾语两种从句名词性从句中的“that”没有词义，也不作任何成分。
除引导宾从外，主从和表从中不省1. 主语从句：从句在句中充当主语成分1) That the earth is round is true .2) Whether he will come is doubtful .3) What he said surprised me most .4) Where he hid the money is to be found out .5) Whoever comes is welcome.6) It’s certain that he will succeed7)How we can help the twins will be discussed at the meeting.8) When they’ll start the project has not been decided yetIt 的用法：（形式主语）It’ possible/important/necessary/clear… that……很可能/重要的是…/必要的是…/很清楚…It’ said/ reported… that…据说/据报道…It’s been announced/declared that…已经通知/宣布…It seems/appears/happens.. that…显然、明显、碰巧…It’s no wonder that…并不奇怪/无疑…It’s a pity/a fact /a common knowledge (众所周知）/ a common saying….（俗话说“if” 不能引导主语从句，应有“whether”引导主语从句的“that” 一般不能省。
“what”引导主语从句时，谓语动词：1）常与其后作表语的名词一致2）根据句子的语境而定。
1.What you left are only several old books.2.What you said is of great importance.3.What he says and does doesn’t concern me.4.What he says and does don’t agree2. 宾语从句：从句在句中充当宾语成分（可以作谓语动词、介词、不定式等非谓语动词的宾语）that, whether，if （that 常可省略）连词：who, what, which, whoever, whateverwhen , where , why ,how1). Can you make sure where Alice has put the goldring.2). It all depends on whether they will support us .3). She will give whoever needs help a warmsupport.4). He made it clear to the public that he did animportant and necessary job .5).I find it necessary that we should do thehomework.3. 表语从句：从句在句中充当表语成分，一般放在连系动词之后.作用：对主语进行解释说明。
连接词：that / whether /as if /as though（if 不引导表语从句)连接代词：who / whoever / which / whatever连接副词：when / where / why / how / becausee.g.China is no longer what she used to be.That’s because we were in need of moneyat that time .He looked as if he was going to cry .Tomorrow is when it would be mostconvenient.1.在表语从句中，表“是否” 时，只能用“whether”不能用“If”。
2.一般情况下，“that”不能省。
3.It is /was because ….It is /was why….3. The reason (why…/for…)is /was that….4 The reason is because /why…4 同位语从句：从句在句中充当同位语成分，一般跟在一些抽象名词（idea ；belief ；fact ；truth ；rumour ；news 等）后面，对名词作进一步解释说明同位语从句常用that/ whether引导或连接副词when / where /why / how1)The idea that computers can recognizehuman voices surprises many people .2)Word came that Napoleon himself wascoming to inspect them .同位语从句和定语从句的区别：1. 同位语从句——that 只起连接作用，不作任何成分定语从句—— that 是关系代词，起连接作用和充当宾语和主语2.同位语从句——同位语从句和前面的名词是同位关系，对名词进行补充说明定语从句——定从和前面的名词是所属关系，对名词进行修饰，加以限定3.同位语从句——that 不能省定语从句——that 在从句中作宾语时，可以省关系代词as与which的用法区别as 和which的相同点(1)as 和which都可引导非限制性定语从句，放在主句之后；在非限制性定语从句中充当从句的主语、宾语或表语。
如：Tom has found a good job, as / which we all hope. 汤姆找到了一件好工作，这正是我们大家所希望的。
(2)as 和which都可代表整个句子的内容或主句中的某一成分。
如：His mother is ill, which makes him very sad. 他母亲病了，这件事情使他很难过。
He has made great progress, as / which makes us very happy. 他进步了，这使得我们很高兴。
以上两句中的as / which都指前面整个句子的内容。
Though he has lots of money, he still rides his old bike, which was boug ht ten years ago. 尽管他很有钱，但是他还骑着他的旧单车，这单车是十年前买的。
There you can meet many writers as you have ever read in books. 在那里，你可见到你在书中所读过的很多作家。
as与which的区别(1)当先行词前面有so + adj. + a / such + (a) + adj. , the same等词修饰时，引导词只能用as，而不用which。
如：She is so nice a girl as we all like. 她是个我们大家都喜欢的如此好的女孩。
It is such an interesting book as we all want to read. 它是本我们大家都想读的有趣的书。
上面两句中的as就不能用which替换。
(2)as 在从句中常作宾语；作主语时，从句的谓语动词常为系动词，即：系表结构或被动结构。
如：As you expected, he turned up on time. 正如你所愿，他按时到了。
As is said above, he has conquered the difficulty. 正如上面所说，他征服了困难。
(3)当非限制性定语从句放到主句的前面时，引导词只能用as，而不用whi ch。
如：As is planned, we got there before eight. 正如计划，我们再把店前到达了那儿。
(4)As引导的非限制性定语从句指表示积极的意义，与主句是顺理成章的关系，绝不能与之矛盾。
若非限制性定语从句表示一种消极的意义，则只用which。
如：He has succeeded in his career, as / which we all hope. 他在事业中成功了，这正是我们大家所希望的。
Her grandma died last week, which made her very sad. 她的奶奶逝世了，这使得她很悲伤。
(5)当非限制性定语从句的引导词前面有介词时，只能用which, 而不可用as。
如：He has a new computer, for which he paid nearly ten thousand yuan. 他有一台新电脑，这台电脑花了他将近一万元。
(6) 当关系代词代替主句中的宾语从句或复合结构(如：宾+补；不定式短语；动词-ing形式短语等) 时，一般只能用which, 而不用as。
如：She told us that there was something wrong with her bike, which was tru e。
她告诉我们说她的单车出了毛病，这话是真的。
He asked her to help him with his English, which she did. 他请她教他学英语，她的确帮了。
(7) 关系代词仅代表主句中的谓语部分时，从句中谓语部分被省略而只保留情态动词的否定式或助动词否定式，引导词一般只用which, 而不用as。
如：He speaks English very fluently, which I can’t. 他的英语说得非常流利，这我可不行。
(8)关系代词作定语修饰后面的名词时，一般只用which, 而不用as。
如：He suggested going swimming in the river, which idea we agreed with.他提议去河里游泳，我们就同意了他的想法。