in which的用法

in which 用于定语从句，作关系副词，在句中不做成分。in which=where in which 只能用在定语从句中，等于where,在定语从句中作状语 如果先行词(指定语从句修饰的那个表地点的词)前已有前置词(介词)，关系副词就用where ；如果先行词前没有前置词，此时既可以用where，也可以用in which,但在美国的TOEFL考试中一般要用in which。例如：①The offices,laboratory,and museum are situated at te top of the hill whe re they command a fine view.(参考译文：办公室、实验室和博物馆都坐落在山顶上，从那儿他们可以俯瞰周围秀丽的景色。)ue003句中用where是因为top前已有前置词at。②The farmer uses wood to build a house in which to store grains.(译文：农民用木头造了一间房子，用来储存粮食。) 详见：http://wenku.baidu.com/link?url=kMyId3loy-8MXd21Gl0zm5O4eD16uiUBMmwNP7vZNvMegoLI40Bv1E0EKwil--OkbLzVzCD9xT9Z0H4nraKirnaISb657XS41PV8XYGPkgS

"in which"，"on which" 和 "at which" 都是用来引导定语从句的介词短语，它们之间的区别在于介词所表示的位置关系不同："In which" 引导的定语从句中，介词 "in" 表示位置在某一范围内。例如："The house in which I grew up was very small." （我成长的那个房子非常小。）。"On which" 引导的定语从句中，介词 "on" 表示位置在物体表面。例如："The table on which the book is placed is made of oak."（这本书放在橡木桌子上）。"At which" 引导的定语从句中，介词 "at" 表示位置在一个特定点上。例如："This is the restaurant at which we had dinner last night."（这就是我们昨晚吃晚餐的那个餐厅。）需要注意的是，这些介词短语仅适用于指物的情况，若是指人，则需使用 "who" 或 "whom" 引导定语从句。

等于 where

1.的确,in which可以等于when,也可以等于where,但不会等于why. 关键是看定语从句中缺少时间状语还是地点状语. 2.例如： 1）I"ll never forget these days in/during which I stayed with you. = I"ll never forget these days when I stayed with you. 我永远不会忘记我和你待在一起的日子. 其中：in/during which I stayed with you = when I stayed with you = I stayed with you in/during which = I stayed with you in/during these days 2）This is the city in which I stayed last year. = This is the city where I stayed last year. 这就是那个去年我待的地方. 其中：where I stayed last year = in which I stayed last year = I stayed in which last year = I stayed in the city last year. 3.另外,有的in which找不到合适的关系副词代替. 如：I dislike the way in which you treat me. 我不喜欢你对待我的方式. 其中：in which you treat me = you treat me in which = you treat me in the way 4.for which = why 如：Can you tell me the reason why you were late? = Can you tell me the reason for which you were late? 你能告诉我你迟到的原因吗? 其中：why you were late = for which you were late = you were late for which = you were late for the reason

in which等于：在哪儿？重点词汇：which英［wu026atu0283］释义：pron.哪一个，哪一些；（指明事物）……的那个，……的那些；（进一步提供有关某事物的信息）那个，那些det.哪一个，哪一些；（指明事物）……的那个，……的那些；（进一步提供有关某事物的信息）那个，那些adj.哪一个，哪一些；无论哪个；（进一步提供有关某事物的信息）那个，那些短语：In Which Channel通过什么渠道；经过什么渠道；经由过程什么渠道；在哪说扩展资料：词语使用变化：Whichpron.（代词）1、which用作疑问代词时，在特殊疑问句中用作宾语或主语。2、which用作关系代词，可引导限制性定语从句或非限制性定语从句，引导非限制性定语从句时which可以用整个主句作为其前行词，相当于and that，有时还可引导不定式短语从句。

当“介词+ which”在定语从句中作时间、地点和原因状语时，可以用相应的关系副词when, where和why来替换。这些都是定语从句里面由which引导的定语从句，介词提前。介词的使用除了意思上的区别，具体是要以which引导的从句而定的。 扩展资料 　　in which, for which, on which, at which的不同用法： 　　1)这些都是定语从句里面，由which引导的定语从句，介词提前。下面这些介词的使用除了意思上的区别，具体是要以which引导的`从句而定的。 　　①in which可以翻译成在……里面 　　The school (that/which) he once studied in is very famous. 　　= The school in which he once studied is very famous. 　　②for which可以翻译成为了……目的 　　Tomorrow I will bring here a magazine (that/which) you asked for. 　　= Tomorrow I will bring here a magazine for which you asked. 　　③on which可以翻译成在……的上面，或具体时间的某一天 　　I have a dresser in my bedroom, which there are many cosmetics on. 　　= I have a dresser in my bedroom on which there are many cosmetics. 　　④at which可以翻译成在……里面或在…… 　　The dumpling House which he often has dumplings at is very popular. 　　= The dumpling House is very popular, at which he often has dumplings. 　　2)当然第一点只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。 　　①The plane may be several hours late, in which case there"s no point in our waiting. 　　(固定搭配：in the case) 　　②The speaker paused to examine his notes, at which point a loud crash was heard. 　　(固定搭配：at the point) 　　③Ten years of hard work changed her greatly, for which reason he could hardly recognize her at first sight. 　　(固定搭配：for the reason) 　　④The film at which I fell asleep was very boring. 　　(Here "at which" is based on "fell asleep at the film"因为电影无聊而睡觉。) 　　⑤The little creature in which scientists are interested is known as ET. 　　(这里"be interested in"是词组原因) 　　⑥This is the book for which he is looking. 　　(即等于This is the book which he is looking for，这主要是因为look for 这一短语)

如果先行词(指定语从句修饰的那个表地点的词)前已有前置词(介词)，关系副词就用where ；如果先行词前没有前置词，此时既可以用where，也可以用in which,但在美国的TOEFL考试中一般要用in which。　　例如：①The offices,laboratory,and museum are situated at te top of the hill whe re they command a fine view.(参考译文：办公室、实验室和博物馆都坐落在山顶上，从那儿他们可以俯瞰周围秀丽的景色。)ue003句中用where是因为top前已有前置词at。②The farmer uses wood to build a house in which to store grains.(译文：农民用木头造了一间房子，用来储存粮食。)

知识拓展：“介词 + 关系代词” 结构 “介词+which”就是把介词提到关系代词 which 之前，它是定语从句中常见的语言现象，也是网友们不易掌握的一个语法项目，问题的关键是这个“介词”较难确定。但它是有规律可循的，有以下几种情况：1. “介词 + which”可以替代关系副词 when, where, why(1)替代whenI"ll never forget the day on which (=when) my son was born.我永远忘不了我儿子出生的那一天。（on依据on the day确定）The year in which (=when) the earthquake happened was 2008.发生地震的那年是2008年。（in依据in the year确定）(2) 替代whereThis is the office in which (=where) I used to work.这就是我过去工作过的办公室。（in依据in the office确定）He forgot the exact place in which (=where) he had hidden the jewelry.他忘记了埋藏珠宝的确切地点。（in依据in the place确定）(3) 替代whyI"d like you to explain the reason for which (=why) you refused my offer.我想让你解释一下你拒绝我的帮助的原因。（for依据for the reason确定）2. 依据与先行词搭配的具体意义确定使用什么介词I"ll never forget the time during which I was with my friends in the country.我永远不会忘记和朋友们一起在乡村度过的时光。(during依据during the time确定)I will offer you a better way in which you can do the job.我要给你提供一个做这项工作较好的办法。(in依据in a better way确定)3. 依据定语从句中动词或形容词的搭配来确定介词She bought several clothes, on which she spent all her money.她买了几件衣服，这些衣服花光了她所有的钱。（on依据spend…on确定）It is the grammar rules of which I am not sure.我没有把握的就是语法规则。（of依据be sure of确定）4. 根据定语从句所表达的具体意思来确定介词Can you see the river across which there is a bridge?你能看见上面有座桥的那条河？He is swimming in the river, on which there is a boat.他在那条河里游泳，河面上有一只小船。Here is the river in which I used to swim.这儿就是我过去常在里面游泳的那条河。

which用于定语从句，作关系代词，在句中要做成分inwhich用于定语从句，作关系副词，在句中不做成分，inwhich=whereinwhich只能用在定语从句中，等于where,在定语从句中作状语。如：helivedinthehouseinwhichtomoncelived.helivedinthehousewheretomoncelived.定语从句中.如thisistheroominwhichwestayed先行词是room，后的句子是用来修饰room的但是room不可做stay的成分，因为stay是不及物动词，后不可直接家宾语所以要有个介词．其实上述的句子＝thisistheroomwhichwestayedin．这里的介词是可以提到which前的注意，第二个句子可用that或省略但第一个只能用which．只有which前可加介词

这是定从句的引导词。但应该是遗漏了先行词，因为没有先行词，定语从句就不成立。通常，引导词紧跟在先行词后面，如果others是先行词，则意思讲不通，因为in which的先行词应该是一个地点名词。比如This is the place in which we met.

在定语从句中使用，way的后面缺方式状语时，用in which

关系代词which引导的定语从句，指物，在从句中可以作主语、宾语等。多数情况下，可与that互换。但是要注意当从句中，介词提前只能用which，而且，在非限制性定语从句中，which引导的句子单独翻译为一句话。

in which相当于where我不会讲解所以就举例子吧：I have an apple which is rotten.I went to a garage which is abandoned.I went to a garage in which cars are rusted.(I went to a garage where cars are rusted.)

　　区别在于后面的定语从句缺少不同的状语。因为这些介词加关系代词中间的介词很多是由定语从句决定的，which指代前面的先行词。其中包含固定词组，要么和先行词构成固定搭配后在定语从句里做状语；要么和定语从句的谓语构成固定搭配做定语从句的状语。　　in which：在......里。　　for which：为了......；因为.....。　　on which：关于......；在......上。　　at which：（具体）在......（年龄/地点等等）。例如：　　Select the database in which you want to compare counters.（ in which在定语从句里做地点状语）　　选择您想要在其中比较计数器的数据库。　　This is an emerging space in which we will likely be seeing some innovation over thecoming months.（ in which在定语从句里做地点状语）　　这是一个新兴空间，关于这方面，在未来的几个月我们将能看到一些创新。.　　That is the reason for which he dislikes me.（for which在定语从句里做原因状语）　　这就是他不喜欢我的原因。　　It would work and serve the specific purpose for which it was created, but it would do little to deliver on the original promise of SOA as it had been envisaged several years earlier. （for which在定语从句里做目的状语）　　没错，它能完成一定的功能并满足最初的特定目标，但至于履行已展望多年的SOA最初承诺，它就不行了。　　The material on which an autograph was signed, and whether the star was living ordead, could have as much of an impact as who signed it.（on which在定语从句里做地点状语，sign on：在......签字）　　有明星亲笔签名的那些东西和给这些东西签名的人物具有同样大的影响力，不管这些明星是活着还是已经死了。　　Where the analysts seem to have gone off the rails last year is in the price-to-earnings multiples on which they based their predictions.（on which在定语从句里做地点状语，词组base......on......：把什么建立在.....上）　　然而，分析师们当时似乎在市盈率倍数这个他们赖以进行预测的关键数据上出了岔子。　　Study of the bones of these cattle from ancient times shows the ages at which the animals were killed.（在定语从句里做时间状语，at the age of：在....岁时）　　对于这些远古时期驯化牛骨骼的研究结果告诉了我们这些家畜宰杀时的年龄。

where是连接副词，in介词＋which关系代词，两者均可作地点状语

修饰地点时

inwhich是先行词为某个地方时候用的，相当于whereonwhich就是先行词是某一天，相当于whenwhich就是先行词是某一样物体，一件事who就是先行词为人的时候用的whom就是先行词是人，而且是有介词或者是宾语例如:ThemanwhomImetyesterdayishisfather因为是Imet“him”whose就是先行词是谁的、人或物体的都行，表示那样东西是属于我或者某件物体的that就是可以代whowhich的不过有些情况下是不可以用的就是在非限定性定语从句里面不过有些情况是必须得用的就是先行词是不定代词，比如anythingsomething先行词中有最高级修饰的是候也只能用that先行词包括人和物也是用that

不同点在于后面的不及物动词 which前面的介词其实是跟在不及物动词后面的

开门见山，闲话少叙。 定语从句中，只有当定语从句的先行词为地点（或抽象地点）时，关系副词where才能与介词（in/on/at）+ which互换使用。如：This is the factory where/in which I worked for two years.It"s helpful to put children in a situation where/in which they can see themselves differently. 而当定语从句的先行词不是地点，而是其它情况时，可以使用介词（in/on/at）+ which时，则不能换为关系副词where。如：I don"t like the way in which you speak to others.

这些都是定语从句中的连词根据先行词与从句的联系的变化而变化例如inwhich=where表地点forwhich=why表原因怎么用要看你把从句改成陈述语序后的动词比如ThehouseinwhichYaomingoncelived.其实就是Yaomingoncelivedinthehouse.这里live要和house的话应该加介词in其他几个也是同样的看情况而定做这种从句要先把语序调过来就会很简单了

定语从句

in which 是什么意思？共5个回答w2xixiTA获得超过286个赞聊聊关注成为第1位粉丝当你要精确表达"在...里面"时, 用in which来代替下列例句中表示"in which"的连词where; in which不能代替代词和不可数名词where.where (Conjunction) Where作连词的含义比in which广泛,笼统.The place in, at or to which.He knows where he"s going.The situation in which.He"s exactly where he belongs. 可用in which来代替where (Pronoun)The place in which.He lives within five miles of where he was born.where (uncountable Noun)The place in which something happens.A good article will cover the who, the what, the when, the where, the why and the howin which 是什么意思？共5个回答w2xixiTA获得超过286个赞聊聊关注成为第1位粉丝当你要精确表达"在...里面"时, 用in which来代替下列例句中表示"in which"的连词where; in which不能代替代词和不可数名词where.where (Conjunction) Where作连词的含义比in which广泛,笼统.The place in, at or to which.He knows where he"s going.The situation in which.He"s exactly where he belongs. 可用in which来代替where (Pronoun)The place in which.He lives within five miles of where he was born.where (uncountable Noun)The place in which something happens.A good article will cover the who, the what, the when, the where, the why and the how

hello,只要把握好了which，就能消除困惑。示例：Thisisthecitywhere/inwhichImetJohn.此处的which指thecity，去掉in，thecity就变成了主语，跟之后的I产生主语冲突，一山不容二虎就是这个道理，去掉in后，大致是这个样子的1.ThisisthecitywhichheldtheOlympicGames.当thecity不再是主语时，是这样的2.ThisisthecityinwhichtheOlympicGameswasheld.它的原型是这样的，3.TheOlympicGameswasheldinthiscity.鉴于本人水平有限，再举恐有疏漏，不能自圆其说，故仅举一例，举一反三即可

定语从句里如果引导词做的是后面从句的宾语是可以省略的。这句话的定语是ThehousewhichIgrewupinhasbeentakendownandreplacedbyanofficebuilding.如果介词in提前，thehouseinwhichIgrewup就不能省了。

此处in which 引导限制性定语从句，在从句中作地点状语，可以用where来替换。此处涉及的知识点是“介词+关系代词”引导定语从句的用法，这里的in的确定主要依据是前边的名词 plane, in a plane在飞机里。 介词还可以通过从句中的主要动词、形容词与介词的搭配来确定。

inwhich:在......里面；onwhich:在......的上面，或具体时间的某一天onwhich和inwhich都可以用来引导定语从句，修饰先行词，区别在于介词on/in这取决于先行词的搭配比如:Ican"tforgetthedayonwhichwehadaparty.这个句子，先行词是day，原本的搭配是ontheday.Iliketheroominwhichtherearemanytoys.这句话的先行词是room，词组搭配是intheroom。例句：1.Theschool(that/which)heoncestudiedinisveryfamous. =Theschoolinwhichheoncestudiedisveryfamous. 2. Ihaveadresserinmybedroom,whichtherearemanycosmeticson. =Ihaveadresserinmybedroomonwhichtherearemanycosmetics. 固定搭配：Theplanemaybeseveralhourslate,inwhichcasethere"snopointinourwaiting.(固定搭配：inthecase) ThelittlecreatureinwhichscientistsareinterestedisknownasET.(这里"beinterestedin"是词组原因) 例题：Ican"tbelievethattherestaurant,______Ihaveeatensuchwonderfulmeal,isgoingtobeclosedown.A.where B.atwhich C.aboutwhich【解答】选B。这个是非限制性定语从句，atwhich在功能上等于where，但就本题而言只能选atwhich。因为atwhichIhaveeatensuchwonderfulmeal是一个插入语，where固然可以引导，但是由于前面有了一个逗号，就只能用atwhich了。“我难以相信我曾经在里面美美地吃过几顿大餐的饭店就要关张了。”非限制性定语从句主要就是先行词+逗号“，”+介词+which或者是先行词+逗号“，”+which，它和限定性定语从句的最显著区别一个是有逗号，一个是非限制定语从句总有which。

选B首先排除D，inwhich只能引导定语从句，但是inwhich前面没有先行词。不选c的道理同D选B的原因：in+宾语从句，宾语从句中where做work的地点状语。翻译：中国沿海地区劳动力的短缺导致了用工成本的上升和另外一种现象---给无技术工人提供了更多工作机会的选择。where：“。。。的地方”

记住哦，in等介词提前，后面一定用whichThese are the days in —which— it takes two salaries for each home,but divorces increase.in which 不是就=where,只有先行词为地点（包括抽象地点）时才相等。此处先行词为 the days，为时间

只能用在定语从句中

in which一般是在定语从句中，which是引导词。意思相当于where如 I know a shop in which you can go purchase.

that和which在定语从句中作宾语，一般后面是及物动词如ThisisabookthatwhichIlikeverymuch.(like是及物动词）inwhich一般后面是不及物动词，和in搭配，把in提前如ThisistheplaceinwhichIwillstay.

1.in which是介词加关系代词,引导定语从句，in可以放到从句中去。 2、in which 只能用在定语从句中，等于where,在定语从句中作状语。 扩展资料 　　如：He lived in the house in which Tom once lived. 　　He lived in the house where Tom once lived.

in which=where，可以作为非限制定语从句的连接词，无意义

1、根据which引导的从句而定，当从句中需要以in作介词时使用。2。把in放进从句中应该是这样的：it is transmitted from one person to another in the way。不是都能组成动词短语的，得了解介词加关系代词引导定语从句时，介词如何去选择，不光是由从句动词去决定，还可能是由先行词决定，等等。按构成分前置词表示它后面的名词或代词（或相当于名词的其他词类、短语或从句）与其他句子成分的关系。前置词通常位于名词或代词之前。（注意：前置词是一种虚词，不能单独作句子成分，只能用在一个名词、代词或相当于名词的结构之前，可以与后面的词一起构成介词短语。）以上内容参考：百度百科-介词

which用于定语从句，作关系代词，在句中要做成分inwhich用于定语从句，作关系副词，在句中不做成分，inwhich=whereinwhich只能用在定语从句中，等于where,在定语从句中作状语。如：helivedinthehouseinwhichtomoncelived.helivedinthehousewheretomoncelived.定语从句中.如thisistheroominwhichwestayed先行词是room，后的句子是用来修饰room的但是room不可做stay的成分，因为stay是不及物动词，后不可直接家宾语所以要有个介词．其实上述的句子＝thisistheroomwhichwestayedin．这里的介词是可以提到which前的注意，第二个句子可用that或省略但第一个只能用which．只有which前可加介词

　　in which的用法 　　which用于定语从句，作关系代词，在句中要做成分 　　inwhich用于定语从句，作关系副词，在句中不做成分，inwhich=where 　　inwhich只搜索能用在定语从句中，等于where,在定语从句中作状语。 　　如：He livedinthe houseinwhichTom once lived. 　　He livedinthe house where Tom once lived. 　　定语从句中.如 　　this is the roominwhichwe stayed 　　先行词是room，后的句子是用来修饰room的 　　但是room不可做stay的成分，因为stay是不及物动词，后不可直接家宾语，所以要有个介词. 　　其实上述的句子 　　this is the roomwhichwe stayedin. 　　这里的介词是可以提到which前的 　　定语从句in which等的用法 　　inwhich, forwhich, onwhich, atwhich的不同用法 　　这些都是定语从句里面，由which引导的定语从句，介词提前。 　　inwhich可以翻译成在……里面 　　forwhich可以翻译成为了……目的 　　onwhich可以翻译成在……的上面，或具体时间的某一天 　　atwhich可以翻译成在……里面或在……上面 　　这些介词的使用除了意思上的区别，具体是要以which引导的从句而定的。 　　例如： 　　(1) The school (that/which) he once studiedinis very famous. 　　= The schoolinwhichhe once studied is very famous. 　　(2) Tomorrow I will bring here a magazine (that/which) you asked for. 　　= Tomorrow I will bring here a magazine forwhichyou asked. 　　(3) I have a dresserinmy bedroom,whichthere are many cosmetics on. 　　= I have a dresserinmy bedroom onwhichthere are many cosmetics. 　　(4)The dumpling Housewhichhe often has dumplings at is very popular. 　　= The dumpling House is very popular, atwhichhe often has dumplings. 　　当然这只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。 例如： 　　The plane may be several hours late,inwhichcase there"s no pointinour waiting. (固定搭配：inthe case) 　　The speaker paused to examine his notes, atwhichpoint a loud crash was heard. (固定搭配：at the point) 　　Ten years of hard work changed her greatly, forwhichreason he could hardly recognize her at first sight.(固定搭配：for the reason) 　　The film atwhichI fell asleep was very boring. 　　(Here "atwhich" is based on "fell asleep at the film"因为电影无聊而睡觉。) The little creatureinwhichscientists are interested is known as ET. 　　(这里"be interestedin"是词组原因) 　　This is the book forwhichhe is looking. 　　(即等于This is the bookwhichhe is looking for，这主要是因为look for 这一短语) 　　例题：1. I can"t believe that the restaurant, ______ I have eaten such wonderful meal, is going to be close down. 　　A. where B. atwhichC. aboutwhich 　　【解答】选B。这个是非限制性定语从句，atwhich在功能上等于where，但就本题而言只能选atwhich。因为atwhichI have eaten such wonderful meal是一个插入语，where固然可以引导，但是由于前面有了一个逗号，就只能用atwhich了。“我难以相信我曾经在里面美美地吃过几顿大餐的饭店就要关张了。”非限制性定语从句主要就是先行词+逗号“，”+介词+which或者是先行词+逗号“，”+which，它和限定性定语从句的最显著区别一个是有逗号，一个是非限制定语从句总有which。 　　2. Wind power is an ancient source of energy ______ we may returninnear future. 　　A. onwhichB. bywhichC. towhichD. fromwhich 　　【解答】选C。return to其实，应该来说，就是一个固定搭配了，解释为回归到，但是呢，如果要说意思的话，也是说得通的"，就是把句子换一换语序你就可以看出来了。“we may return to wind powerinnear future.”也就是说，看到prep.+which这种形式，就可以直接把它扔到动词后面，然后在进行选择，看缺少哪个介词。 　　3. We have gathered nearly 100,000 quilts, _____up to half have gone to flood-hit areas. 　　A. withwhichB.inwhichC. forwhichD. ofwhich 　　【解答】选D。这里的which指的是，nearly 100,000 quilts(被褥)，也就是说，后半句的主语是在这nearly 100,000 quilts里面的up to half。 　　例：I don"t know the reason why/forwhichhe did it. 　　The reason why/forwhichhe was fired was not clear. 　　There are many countriesinAsia, ofwhichChina is the largest one. 　　亚洲有很多国家，中国是最大的一个。 　　附：whose和 ofwhich的区别 　　1. 关系代词whose，引导定语从句时，既可指人，又可指物，在从句中只能作定语;of whom只能指人;ofwhich只能指物，有时whose可以与of whom和ofwhich互换使用。如： 　　The girl whose hair is golden is from England. 头发金色的那个女孩是英国人。 　　The house whose doors(ofwhichthe doors) are green is an office building. 门是绿色的那座房子是办公楼。 　　2. “介词 + whose +名词”引导定语从句。如： 　　I love my motherland, for whose good future I will work hard. 我爱我的祖国，为了她美好的未来我要努力工作。 　　3. 在下列情况下，一般只用of whom和ofwhich。 　　(1)定语从句的主语是few, little, some, most, many, much等时，一般只用of whom和ofwhich。 　　Inthe room are lots of people, many of whom I don"t know. 房间里有很多人，很多人我不认识。 　　He has a lot of story-books, a few ofwhichI have never read. 他有很多故事书，有几本故事书我还从未看过。 　　(2)定语从句的主语是数词、形容词的最高级时，一般只用of whom和ofwhich。如： 　　The old man has three children, two of whom are college students and one of whom is a manager. 那个老人有三个小孩，其中两个是大学生，另一个是经理。 　　(3)定语从句的主语是all, none, both, neither, each等不定代词时，一般只用of whom和ofwhich。如： 　　There are fifty studentsinour class, all of whom are working hard. 我们班有五十个学生，所有这五十个学生学习都刻苦。 　　He planted two trees last year, both ofwhichare growing well. 去年他栽了两棵树，这两棵树都长得好。 　　(4) 在定语从句中作表语的定语时，一般只用of whom和ofwhich。如： 　　He has three brothers, of whom Li Lei is the youngest one. 它有三兄弟，李雷是他们中最小的一个。 　　There are many countriesinAsia, ofwhichChina is the largest one. 亚洲有很多国家，中国是最大的一个。 　　(5) 形式不同。如： 　　The house windows face south is our reading-room. 　　A. ofwhichB. whose C.whichD. its 　　【解答】此题正确答案是B，不能选择A。选择ofwhich时应在名词前加上定冠词the，也就是名词前有the就只能用ofwhich。如果名词前没有冠词，就用whose。若上题改为The house the windows face south is our reading-room，则此题只能选A不能选B了。 　　(6) ofwhich除了可以表示所属关系外，还可以用来表示整体的关系，而whose则不能。例： 　　He borrowed a book ofwhichthe author was a peasant. 　　InBarcelona the Chinese team got 16 gold medals, ofwhich12 were won by women. 第一句中的ofwhich就可以用whose来代替，因为这个句子中of是用来表示所属关系的。可改写成：He borrowed a book whose author was a peasant. 而第二句中的ofwhich不能用whose代替，因为这个句子中的of不是表示所属关系，而是表示整体与部分的关系。 　　(7) 引导非限制性定语从句多用whose，而很少用表示所属关系的介词of加上关系代词which。如： 　　There is a mysterious lake at the foot of the hill, whose depth has never been measured. 山脚下有个神秘的湖，其深度从未被测量过。 　　如介词of不表示所属关系，而是用来表示整体与部分的关系，此时就经常引导非限制性定语从句了。如： 　　There are 102 elements foundinnature, ofwhichmost are metals. 　　The story about Long March, ofwhichthis is one example, are well written. 　　I"d like a car whose front lights are big and round. 　　I"d like a car, the front lights ofwhichare big and round. 　　The book, the cover ofwhichis broken, is not mine. 　　The book, whose cover is broken, is not mine. 　　介词加which的用法 　　1)介词与先行词的习惯搭配 　　There is no wayinwhichit could be brought back to the earth.(SEFC 2A L.55)(in与way是习惯搭配) 　 　2)介词与定语从句中的动词，形容词的习惯搭配 　　These are the wires withwhichdifferent machines are connected.(be connected with是习惯搭配) 　　The author with whom all of us are familiar will visit our compa-ny.(be familiar with是习惯搭配) 　　3)同形的先行词，或定语从句中的动词，形容词表示不同的含义时，要根据其含义选用不同的介词。 　　I can"t remember the age atwhichhe won the prize. 　　That is the ageinwhichpeople liveinpeace and happiness. 　　age在前句中意为“年岁”，与at搭配;在后句中意为“时期”，与in搭配。 　 　4)复杂介词须保持其完整形式，常见的复杂介词有on the top of，inthe middle of，infront of，inspite of，at the back of，because of等。 　　We took a photo of rocket，the length ofwhichwas about 30me- tres.(SEFC 2A L.55) 　　Sound is a tool by means ofwhichpeople communicate with each other. 　　They marched through the square，inthe middle ofwhichstood a monument. 　　5)短语动词中的介词不可与动词分开提至关系代词前。常见的短语动词有listen to，look at，depend on，pay attention to，take care of，look into，break into，get rid of，take partin，make use of，take hold of，catch hold of，catch up with，get along with，look forward to等。此时可用which，who，whom或that，也可将他们省略。 　　(误)This is the girl of whom he will take care. 　　(正)This is the girl whom he will take careof. 　　6)当介词与定语从句中的动词或形容词联系紧密(但不是短语动词)时，介词也可放在动词或形容词的后面。但当介词与从句中的动词或形容词联系不紧密时，则需将介词置于关系代词前。比较： 　　The space stationwhichwe drove to wasinthe desert.(SEFC 2A L.55) 　　I"ll never forget the dayinwhichI joined the Party. 　　后句中若置于句尾则有“孤零零”之感，这时宜将介词置于关系代词前;而前句中的to则可后置。 　　用于介词后的关系代词只有which，whom，前者指物，后者指人。 　　There are many research stations on the earthinwhichouter space is studied.(SEFC 2A L.55)(which指代research stations) 　　We questioned the pilot，from whom we learnt that no other planes had been seen.(SEFC 2A L.55)(whom指代the pilot)

　　如果先行词(指定语从句修饰的那个表地点的词)前已有前置词(介词)，关系副词就用where ；如果先行词前没有前置词，此时既可以用where，也可以用in which,但在美国的TOEFL考试中一般要用in which。　　例如：①The offices,laboratory,and museum are situated at te top of the hill whe re they command a fine view.(参考译文：办公室、实验室和博物馆都坐落在山顶上，从那儿他们可以俯瞰周围秀丽的景色。)ue003句中用where是因为top前已有前置词at。②The farmer uses wood to build a house in which to store grains.(译文：农民用木头造了一间房子，用来储存粮食。)

这里的 which 从句不是定语从句，而是介词 in 的宾语从句，在句子中作状语。因此，这个 in which... 无法转换成“定语从句”。由于原句是一个问句，其陈述句形式是：The presence of non bonding electron pairs produces an effect on molecular shapes in either molecules or ions.

in which、on which、at which的区别为：一、指代不同1、in which：在其中。2、on which：哪个。3、at which：在哪。二、侧重点不同1、in which：侧重于表示一种所属关系。2、on which：侧重于表示一种目的关系。3、at which：侧重于表示一种被动关系。三、引证用法不同1、in which：which用作疑问代词时，在特殊疑问句中用作宾语或主语。2、on which：which用作关系代词，可引导限制性定语从句或非限制性定语从句。3、at which：引导非限制性定语从句时which可以用整个主句作为其前行词，相当于and that，有时还可引导不定式短语从句。

如果先行词(指定语从句修饰的那个表地点的词)前已有前置词(介词)，关系副词就用where；如果先行词前没有前置词，此时既可以用where，也可以用inwhich,但在美国的TOEFL考试中一般要用inwhich。　　例如：①Theoffices,laboratory,andmuseumaresituatedattetopofthehillwheretheycommandafineview.(参考译文：办公室、实验室和博物馆都坐落在山顶上，从那儿他们可以俯瞰周围秀丽的景色。)ue003句中用where是因为top前已有前置词at。②Thefarmeruseswoodtobuildahouseinwhichtostoregrains.(译文：农民用木头造了一间房子，用来储存粮食。)

inwhich在定语从句中有的时候等于where

这些都是定语从句里面，由which引导的定语从句，介词提前。in which 可以翻译成在......里面 指地点是大地点 指时间 就是原来该用in 地方 for which 可以翻译成为了......目的on whch 可以翻译成在......的上面 指时间是指具体某天at which 可以翻译成在.....里面或在.....上面

inwhich,forwhich,onwhich,atwhich的不同用法　　1)这些都是定语从句里面，由which引导的定语从句，介词提前。下面这些介词的使用除了意思上的区别，具体是要以which引导的从句而定的。　　①inwhich可以翻译成在……里面　　Theschool(that/which)heoncestudiedinisveryfamous.　　=Theschoolinwhichheoncestudiedisveryfamous.　　②forwhich可以翻译成为了……目的　　TomorrowIwillbringhereamagazine(that/which)youaskedfor.　　=TomorrowIwillbringhereamagazineforwhichyouasked.　　③onwhich可以翻译成在……的上面，或具体时间的某一天　　Ihaveadresserinmybedroom,whichtherearemanycosmeticson.　　=Ihaveadresserinmybedroomonwhichtherearemanycosmetics.　　④atwhich可以翻译成在……里面或在……　　ThedumplingHousewhichheoftenhasdumplingsatisverypopular.　　=ThedumplingHouseisverypopular,atwhichheoftenhasdumplings.　　2)当然第一点只是介词作为基本意思的用法，还有一些固定搭配，得具体情况具体分析。　　①Theplanemaybeseveralhourslate,inwhichcasethere"snopointinourwaiting.　　(固定搭配：inthecase)　　②Thespeakerpausedtoexaminehisnotes,atwhichpointaloudcrashwasheard.　　(固定搭配：atthepoint)　　③Tenyearsofhardworkchangedhergreatly,forwhichreasonhecouldhardlyrecognizeheratfirstsight.　　(固定搭配：forthereason)　　④ThefilmatwhichIfellasleepwasveryboring.　　(Here"atwhich"isbasedon"fellasleepatthefilm"因为电影无聊而睡觉。)　　⑤ThelittlecreatureinwhichscientistsareinterestedisknownasET.　　(这里"beinterestedin"是词组原因)　　⑥Thisisthebookforwhichheislooking.　　(即等于Thisisthebookwhichheislookingfor，这主要是因为lookfor这一短语)

"in which"和"on which"都是英语中的短语，但它们的用法略有不同。"in which"通常用于介词短语中，表示某个事物发生的地点或情况。例如：The restaurant in which we ate was very expensive.The house in which I grew up was in the countryside."on which"通常用于表示某个事件发生的具体日期或时间。例如：The day on which we met was a sunny Saturday in May.The moment on which she realized her mistake was very embarrassing.另外，"on which"也可以用于指代一个物体或地方上的某个特定位置。例如：The table on which the book was resting was too small.The building on which the flag was flying was the town hall.总之，"in which"和"on which"都是用于描述某个事物发生的地点、时间或位置，但用法略有不同。

which用于定语从句，作关系代词，在句中要做成分inwhich用于定语从句，作关系副词，在句中不做成分，inwhich=whereinwhich只能用在定语从句中，等于where,在定语从句中作状语。如：helivedinthehouseinwhichtomoncelived.helivedinthehousewheretomoncelived.定语从句中.如thisistheroominwhichwestayed先行词是room，后的句子是用来修饰room的但是room不可做stay的成分，因为stay是不及物动词，后不可直接家宾语所以要有个介词．其实上述的句子＝thisistheroomwhichwestayedin．这里的介词是可以提到which前的注意，第二个句子可用that或省略但第一个只能用which．只有which前可加介词

in which可以等于when，也可以等于where。In which可以理解成将 in 从后面的子句中搬到前面来，让原本可能冗长的句子，变得很精简。例句：I saw a movie in which the villain goes to jail.我看了一部关于坏蛋被关进监狱的电影。相关信息：which是定语从句的关系代词之一，有且仅有两种用法。1、which前面有逗号，逗号前面是个名词，which就近指代那个名词。例句：Tankfield emailed Pea some photos, which did not cheer Pea up.坦克福尔德给皮尔邮件了一些照片，却并没有让皮尔高兴起来。2、which前面是介词，介词前面是名词，which就近指代介词前的那个名词，名词和介词之间有无逗号均可。例句：Tankfield once lent Pea a book from which Pea glimpsed the basics of genes.坦克福尔德曾经借给皮尔一本他曾经在上面瞄到过基因理论的书。

in which on which at which的区别为：一、指代不同1、in which：在其中。2、on which：哪个。3、at which：在哪。二、侧重点不同1、in which：侧重于表示一种所属关系。2、on which：侧重于表示一种目的关系。3、at which：侧重于表示一种被动关系。三、引证用法不同1、in which：which用作疑问代词时，在特殊疑问句中用作宾语或主语。2、on which：which用作关系代词，可引导限制性定语从句或非限制性定语从句。3、at which：引导非限制性定语从句时which可以用整个主句作为其前行词，相当于and that，有时还可引导不定式短语从句。

in that,意为“既然、因为”,引导原因状语从句,用法相当于because 例如：Critici *** and self-critici *** is necessary in that it helps us correct our mistakes. 批评与自我批评是必要的,因为它可以帮助我们纠正错误. in which,为介词加关系代词,引导定语从句. 例如：A final consideration is the environment in which we live and work. 最后一项要考虑的是人们的生活与工作环境.,2,in that 短语，“在于……”that引导宾语从句 in which 引导定语从句，一般等于where引导的定语从句。,0,简单点说，in that可以看成because，因为in that的解释就是“因为，在于”。 that是介词in的宾语从句，that引导事情的原因。 The two worlds are very different in that, well, one world is real and the other is not. 这两个世界是非常不同的是，嗯，一个世界是真实的，另一个则...,0,

which和in which用法的区别为：意思不同、用法不同、词性不同。一、意思不同1、which：哪一个，哪一些。2、in which：在其中。二、用法不同1、which：which用作关系代词，可引导限制性定语从句或非限制性定语从句，引导非限制性定语从句时which可以用整个主句作为其前行词，相当于and that，有时还可引导不定式短语从句。2、in which：in which用于定语从句，作关系副词，在句中不做成分，in which=where。三、词性不同1、which：which是关系代词或关系形容词，作为代词用作主语或宾语，作为形容词用作定语。2、in which：“介词短语+ which”属于副词性，只能用作状语。

1. in which是介词加关系代词，引导定语从句in可以放到从句中去our immune system breaks down in this condition 2. 把in放进从句中应该是这样的：it is transmitted from one person to another in the way.不是都能组成动词短语的，你得了解介词加关系代词引导定语从句时，介词如何去选择，不光是由从句动词去决定，还可能是由先行词决定，等等。（1）以从句中动词；形容词；名词与介词的固定搭配而定； [高考考例]2. In the dark street, there wasn"t a single person _____ she could turn for help. [MET 1992] A. that B. who C. from whom D. to whom [思路点拨]答案为D. turn to sb for help 为固定搭配表示“求助于某人” （2）以先行词与从句中的动词关系及所表达的含义而定或以先行词在定语从句中的作用与含义而定。 [考例]1. The medicine of science, ______ progress has been very rapid lately, is perhaps the most important of all the science. A. to which B. in which C. which D. with which [思路点拨]答案为B.从句主谓结构搭配为：progress has been rapid in, 这里的in意为“在某方面”，相当于rapid progress has been made in the science of medicine. [考例]2. The professor made his first speech _____ he talked about some subjects the students were interested. A. that B. which C. in which D. of which [小结]关键词：介词的选用与从句主谓结构的搭配有关。