定语从句 where,when,what,which用法
定语从句的用法
w hen，where，why属于关系副词，都在其引导的定语从句中充当状语，其具体用法如下：1. 关系副词 when引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示时间的先行词，在定语从句中充当时间状语。
例如： I still remember the day when I first met Jennifer.我仍然记得第一次见到詹妮弗的那一天。
// Next month，when you’ll spend your summer holidays in your hometown， is approaching. 下个月即将来临，届时你们将在家乡度暑假。
2. 关系副词where引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示地点的先行词，在定语从句中充当地点状语。
例如： This is the office where he worked. 这就是他工作过的办公室。
// She is going to live in Macao， where she has some close friends. 她要到澳门去定居，在那里她有几个密友。
3. 关系副词why引导限定性定语从句修饰先行词reason，在定语从句中充当原因状语。
例如：I don’t know the reason why he came so late. 我不知道他来得那么晚的原因。
// That is the reason why I don’t want to go. 那就是我不想去的理由。
// He didn’t tell me the reason why he was so upset.他没有告诉我他为什么那样心烦意乱。
注意：关系代词与关系副词之间并非毫无关联，两者之间存在密切的联系。
在备考中尤其要注意以下几点：1. 很多情况下关系副词用“介词＋which/whom”来代替，其中的介词由先行词或定语从句中谓语动词的形式来决定，例如：The day when I met the famous pop star was the greatest day of my life.= The day on which I met the famous pop star was the greatest day of my life.见到这位著名歌星的那天是我一生中最重要的日子。
英语中定语从句用法
英语中定语从句用法英语中定语从句用法定语从句，一个简单句跟在一名词或代词后（先行词）进行修饰限定，就叫做定语从句。
中定语从句用法在复合句中，修饰名词或代词的从句叫定语从句，被修饰的名词或代词叫先行词，引导定语从句的有关系代词who, whom, whose, which, that等和关系副词where, when, why等，关系代词和关系副词在定语从句中担任句子成份。
1.由who引导的定语从句中，who用作主语，如：This is the boy who often helps me.2.由whom引导的定语从句中，whom用作宾语，如：The man whom you are waiting for has gone home.3.由whose引导的定语从句中，whose用作定语，如：Do you know the girl whose skirt is white?4.由which引导的定语从句中，which用作主语或谓语动词的宾语或介词的宾语，如：The room in which there is a machine is a work shop.The river which is in front of my house is very clean.This is the pen which you want.注意：(1)whom, which用作介词宾语时，介词可放在whom、which之前，也可放在从句原来的位置上；但在含有介词的动词固定词组中，介词只能放在原来的位置上。
如：He is the very person whom we must take good care of.(2)引导非限制性定语从句时，必须用关系代词which，不用that,如：I have lostmy bag, which I like very much.(3)关系代词在句中作主语时，从句的谓语动词的人称和数必须和先行词保持一致。
定语从句where,when,what,which用法
(4) 当先行词被序数词或形容词最高级所修饰时。
It is the first foreign book that I have ever seen.
This is the most beautiful flower that I have seen.
（错） I will never forget the days when I spent in the countryside.
（对） This is the mountain village (which) I visited last year.
（对） I'll never forget the days (which) I spent in the countryside.
Beijing is the place where (in which) I was born. 北京是我的出生地。
Is this the reason why (for which) he refused our offer 这就是他拒绝我们帮助他的理由吗
2）that代替关系副词
that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，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.
when引导的定语从句的用法
when/where/why引导的定语从句的用法when， where， why属于关系副词，都在其引导的定语从句中充当状语，其具体用法如下：1. 关系副词 when引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示时间的先行词，在定语从句中充当时间状语。
例如： I still remember the day when I first met Jennifer.我仍然记得第一次见到詹妮弗的那一天。
// Next month, when you’ll spend your summer holidays in your hometown, is approaching. 下个月即将来临，届时你们将在家乡度暑假。
2. 关系副词where引导定语从句（包括限定性定语从句和非限定性定语从句）修饰表示地点的先行词，在定语从句中充当地点状语。
例如： This is the office where he worked. 这就是他工作过的办公室。
// She is going to live in Macao, where she has some close friends. 她要到澳门去定居，在那里她有几个密友。
3. 关系副词why引导限定性定语从句修饰先行词reason，在定语从句中充当原因状语。
例如： I don’t know the reason why he came so late. 我不知道他来得那么晚的原因。
// That is the reason why I don’t want to go. 那就是我不想去的理由。
// He didn’t tell me the reason why he was so upset.他没有告诉我他为什么那样心烦意乱。
注意：关系代词与关系副词之间并非毫无关联，两者之间存在密切的联系。
在备考中尤其要注意以下几点：1. 很多情况下关系副词用“介词＋which/whom”来代替，其中的介词由先行词或定语从句中谓语动词的形式来决定，例如：The day when I met the famous pop star was the greatest day of my life.= The day on which I met the famous pop star was the greatest day of my life.见到这位著名歌星的那天是我一生中最重要的日子。
英语定语从句的用法
英语定语从句的用法在英语中有很多种句式，今天让大家一起了解英语中定语从句的用法、接下来小编在这里给大家带来英语定语从句的用法，我们一起来看看吧!英语定语从句的用法定语从句由关系代词who、whom、whose、which、what、as 和关系副词where、when、why等引导，但须记住：1.what不能引导定语从句.2.关系词的分析须考虑它在定语从句中的成分。
一.指人的关系代词有who、whose、whom、that. 试分析：The old man who/whom /that we visited yesterday is a famous artist.Miss Wang is taking care of the child whose parents have gone to Beijing .The man with whom my father shook hands just now is our headmaster.(=The man who/whom that my father shook hands with just now is our headmaster.)注：A. 指人时有时只用who不宜用that。
1.先行词为one、ones或anyone(1)The comrade I want to learn from is the one who studies hard and works hard.(2)Anyone who breaks the law should be punished.2.先行词为these时These who are going to Beijing are the best students of our school.3.在there be 开头的句子中There is a student who wants to see you.4.一个句子中带有两个定语从句，其中一个定语从句的关系代词是that，另一个宜用who，以免重复。
英语语法：同位语从句
英语语法：同位语从句英语语法：同位语从句英语语法是针对英语语言进行研究后，系统地总结归纳出来的一系列语言规则。
英语语法的精髓在于掌握语言的使用。
以下是店铺收集整理的英语语法：同位语从句，希望能够帮助到大家。
英语语法 -同位语从句1.同位语从句：whetherwhether可以引导同位语从句，而定语从句不能用whether作为引导词。
He hasn’t made the decision whether he will go there.他还没有做出决定是否去那里。
I have small doubt whether he is suitable for the job.他是否适合这件工作我有点怀疑。
2.同位语从句：that些名词的后面可以接that引导的同位语从句：We came to the decision that we must act at once. 我们做出决定：我们必须立即行动。
He made a proposal that the meeting be postpone. 他提议会议延期。
There was little hope that he would survive. 他幸存的希望很小。
在非正式语体中that可以省略。
以下名词常用于以上句型：advice, announcement, argument, belief, claim, conclusion, decision, evidence, explanation, fact, feeling, hope, idea, impression, information, knowledge, message, news, opinion, order, probability, promise, proposal, remark, reply, report, saying, statement, suggestion, thought, treat, warning, wish, word3.同位语从句：whatwhat可以引导同位语从句，而定语从句不能用what作为引导词I have no idea what he is doing now. 我不知道他现在在干什么。
定语从句 关系副词的用法及定语从句用法的其他要点
• Look over there.Some people are standing under the big tree,from where we enjoy the whole view. • 分析：where代表under the big tree这个地 方，如果用which就只能代表the big tree,这 句话的意思不是Enjoy the view from the big tree而是from under the big tree所以只 能用from • Where
• I have reached a point in my life where I am supposed to make decisions of myself. Those successful deaf dancers think that dancing is an activity where sight matters more than hearing. 四.关系代词和关系副词的比较 关系代词和关系副词在定语从句中除了其连接主 句和从句的作用外，他们换在定语从句中担当 句子成分。关系代词在定语从句中担当主语， 宾语，
• • • • • • •
is a part of China we must unify it. is 5. the idea ,which I think________( be ) Reasonable ,was brought up by Professor Li Yesterday. 6.I still remember the teachers and the school were ( be )talked of yesterday. that _______ 2.注意way/time 后接定语从句的情况
英语三大从句
英语三大从句LELE was finally revised on the morning of December 16, 2020复合句【语法要点】复合句是由一个主句加一个或几个从句所构成的句子。
从句只用作句子的一个成分，不能独立。
根据从句在句子中的作用，可分为名词性从句、定语从句和状语从句三类。
（一）名词性从句名词性从句包括主语从句、表语从句、宾语从句、同位语从句。
其关联词有连接词that、if、whether；疑问代词who、what、which和疑问副词when、where、how、why等。
1）if不能引导表语从句。
连接代词who、what、whose、which不能引导同位语从句。
2）有时as、as if/though、because也可以引导表语从句，能跟表语从句的谓语动词一般为系动词be、seem、look等。
例如：Things are not always as they seem to be.事情并不总是像表面上看来的那样。
It looks as if it were going to rain. It is because you eat too much.3）介词宾语不可以用which来引导，而要用what来引导。
例如：We can learn what we did not know. He will talk to us about what he saw in the .4）连词that引导的名词性从句除能用在except、but、in后之外很少作介词的宾语，。
其它一些介词的宾语从句如果由连词that引导，则需用it先行一步作形式宾语。
例如：He is a good student except that he is careless.You may depend on it that they will support you.5）若主句谓语动词是及物动词make、find、think、see、hear等，则把宾语从句置于宾语补足语之后，用it作形式宾语。
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二、关系代词that, which的用法
A.以下情况多用that.
(1)如果先行词是all, much, anything, something, nothing, everything, little, none等不定代词，关系代词一般只用that，不用which。例如：
关系词的选择依据在从句中所做的成分，先行词在从句中做主、定、宾语时，选择关系代词(who, whom, that, which, whose)；先行词在从句中做状语时，应选择关系副词( where地点状语，when时间状语，why原因状语)。
五、限制性和非限制性定语从句
1)定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如：
His father died the year (that / when / in which) he was born.
他父亲在他出生那年逝世了。
He is unlikely to find the place (that / where / in which) he lived forty years ago.他不大可能找到他四十年前居住过的地方。
主题：
定语从句知识讲解定语从句何时用that,何时用which,何时用where,when,what…
内容：
定语从句何时用that,何时用which,何时用where,when,what…
主题：
定语从句
内容：
定语从句
定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。
This is the mountain village where I stayed last year.
I'll never forget the days when I worked together with you.
判断改错（注：先显示题，再显示答案，横线；用不同的颜色表示出。）
（错）This is the mountain village where I visited last year.
例2. Is this the museum ____ the exhibition was held.
A. where B. that C. on which D. the one
答案：例1 D，例2 A
例1变为肯定句：This museum is ___ you visited a few days ago.
关系代词有：who, whom, whose, that, which等。
关系副词有：when, where, why等。
一、关系代词引导的定语从句
关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。
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.
三、关系副词引导的定语从句
关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。
1）when, where, why
关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如：
There are occasions when (on which) one must yield.任何人都有不得不屈服的时候。
This is the house which we bought last month.
这是我们上个月买的那幢房子。（限制性）
The house, which we bought last month, is very nice.
这幢房子很漂亮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：
(4) which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。在这种从句中，which可以作主语，也可以作宾语或表语，多数情况下意思是与and this相似，例如：
He succeeded in the competition, which made his parents very happy.
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。
说明：关系代词that和关系副词why不能引导非限制性定语从句。
六、介词+关系词
(1) “介词＋关系代词“可以引导限制性定语从句，也可以引导非限制性定语从句。
All the people that are present burst into tears.
Is there anything that I can do for you?
(2)如果先行词被the only, the very, the same, the last, the best等词修饰，关系代词常用that(指人时，可以用who),例如：
例2变为肯定句：This is the museum ___ the exhibition was held.
在句1中，所缺部分为宾语，而where, that, on which都不能起到宾语的作用，只有the one既做了主句的表语，又可做从句的宾语，可以省略关系代词，所以应选D。
而句2中,主、谓、宾俱全，从句部分为句子的状语表地点，既可用副词where，又因in the museum词组，可用介词in + which引导地点状语。而此题中，介词on用的不对，所以选A。
1）who, whom, that
这些词代替的先行词是人的名词或代词，在从句中所起作用如下：
Is he the man who/that wants to see you?
他就是你想见的人吗？（who/that在从句中作主语）
He is the man whom/ that I saw yesterday.
I don’t like the way (that/ in which) he was treated.
This is the reason he was absent.
四、判断关系代词与关系副词
方法一：用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如：
This is the very book that I want to find.
That is the best film that we have seen.
I was the only person in my office that/who was invited.
(3)当先行词被all, every, no, some, any, little, much所修饰时；
You can take any seat that is free.
(4)当先行词被序数词或形容词最高级所修饰时。
It is the first foreign book that I have ever seen.
This is the most beautiful flower that I have seen.
他就是我昨天见的那个人。（whom/that在从句中作宾语）
2) Whose用来指人或物，(只用作定语,若指物，它还可以同of which互换）,例如：
They rushed over to help the man whose car had broken down.那人车坏了，大家都跑过去帮忙。
习惯上总把表地点或时间的名词与关系副词where, when联系在一起。此两题错在关系词的误用上。
方法二：准确判断先行词在定语从句中的成分(主、谓、宾、定、状)，也能正确选择出关系代词/关系副词。
例1. Is this museum ___ you visited a few days age?
A. where B. that C. on which D. the one
(5)在there be句型中，常用that.
There is a man that lives in that village.
(6)先行词有两个，一个指人，一个指物，关系代词应该用that。例如：
The boy and the dog that are in the picture are very lovely.
（错）I will never forget the days when I spent in the countryside.
（对）This is the mountain village (which) I visited last year.
（对）I'll never forget the days (which) I spent in the countryside.