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高中英语定语从句详解Ⅰ、概念:(１) 定语从句:在主从复合句中用作定语得从句叫定语从句。
定语从句一般紧接在先行词（antｅcedｅｎt)后面。
(2) 先行词:被定语从句修饰得成份。
先行词可以为一个词,短语，或整个主句。
(3)引导定语从句得词叫关系词,分为关系代词与关系副词。
关系词得作用:1) 引导定语从句，连接主句与从句,相当于一个连词;２) 必在从句中作某个句子成份(可以做主语,宾语,表语,定语，状语)常用得关系代词: ｔhat、wｈｉcｈ、wｈo、whom、wｈosｅ,当关系代词在定语从句中做宾语时，关系代词可以省略。
常用得关系副词(在从句中只作状语): when(时间状语）、why(原因状语)、wｈe ｒｅ（地点状语）可以修饰人得关系代词:thａt, ｗho，wｈｏｍ,whosｅ可以修饰事得关系代词:tｈat, whｉcｈ, as，whose,The studeｎt who answerｅd ｔhe ｑuestion was John、Ｉkｎow thｅｒeasoｎwhy he wａｓso angｒy、The bｏy （wｈom) ｙou are taｌkｉnｇｔo is myｂrotｈｅｒ、Ｉ'd likｅ a ｒoｏｍwhose window fａｃesｔｈe sea、定语从句三步：第一找出先行词;第二瞧先行词在定语从句中得语法功能（做主语、宾语、表语或状语);第三选择合适得关系词。
Ⅱ、几个关系代词得基本用法:●tｈat:可指人或物；在定语从句中作主语,宾语,表语。
(指人时,相当于whｏ或wｈｏｍ;指物时,相当于whiｃh)（一般不用于非限制性定语从句；不可置于介词后作宾语) 如:1、A lｅtteｒthaｔ／which is wrｉtｔen in peｎcｉl is diffiｃult ｔo ｒead、（主语)2、Do yｏu kｎｏw tｈe gentleman ｔhａｔ/ｗｈｏspoke just ｎｏw?3、Ｙou can takｅａnything ( ｔhat)you like、(宾语)4、Whaｔｉs thｅquestiｏｎ(ｔhat/whｉｃh) they aｒｅｔalｋing about?5、Hｅreｉs theｍan （wｈo／whom/ｔhat) yｏu want tｏsee、6、Ｓhe＇s no longeｒthe girl( that) sｈeｕsｅd to ｂe befｏre、（表语）7、Ｏuｒhometｏwn iｓno ｌonger ｔhｅoｎe (thａt)it usｅｄto ｂe、(=Ｏｕr homeｔｏｗn iｓｎot tｈe sａｍe as it uｓed tｏｂe、= Our hｏmｅtｏwn is diffeｒenｔfrom what iｔｕｓｅｄtｏｂe。
高中英语所有定语从句考点总结定语可以由形容词、名词、代词、分词、不定式以及介词短语等来担任，也可以由一个句子来充当，充当定语功能的句子称为定语从句。
1.先行词：被定语从句所修饰的名词或代词①指人的先行词②指物的先行词★ 先行词还可以是前面整个句子所叙述的事情。
He has passed the driving test, which surprises all of us. (which替代前面所叙述的事情) 先行词2.关系词：引导定语的词(1)关系词的作用①替代前面的先行词（替代作用）②连接主句和定语从句（连接作用）③在定语从句中作句子成分（成分作用）(2)关系词的分类①标准：根据关系词在从句中做的句子成分种类②关系代词：在从句中做 主，宾，表，定（that/which/who/whom/whose/as）③关系副词：在从句中作状语(When/where/why)3.定语从句：用来做定语，修饰限定先行词的句子1.限制性定语从句：对先行词起限定修饰作用。
He is a teacher who works at our school.2.非限制性定语从句：对先行词起补充说明作用(先行词与定语从句之间有逗号隔开)Beijing, which is the capital of China, is a beautiful city with a long history.比较：He has two sons, who work in the same company.(He has only two sons.)He has two sons who work in the same company.(Perhaps he has two more sons)1.关系代词的省略(限定性定语从句)(1)关系代词在定语从句中作宾语She is the girl (whom / that) I loved before. (可以省略whom/that)(2)关系代词在定语从句中作表语He is no longer the boy (that) he used to be. (可以省略that)(3)关系代词作介词宾语，介词在从句句尾时可以省略Housing price is a problem (that/which) people are interested in.比较：Housing price is a problem in which people are interested.（此时只能用which且不能省略） 2.先行词是人(that/who的区别)(1)用that的情况①以疑问词who开头的句子中Who is the man that is shouting there?②关系代词在从句中作表语时She is not the girl that she used to be.③先行词被the very, the right, the only修饰This is the very person that we are looking for.(2)用who的情况①先行词是one, ones, anybody, all, none, those 等Those who want to go to the cinema will have to wait at the gate of the school.②句子中有两个定语从句,一个用了that,另外一个用whoWho is the boy that won the gold medal?③在there be 结构中There are many young men who are against him.④在非限定性定语从句当中Tom, who is my best friend, has gone abroad to study.3.先行词是物(that / which的区别)(1)用which的情况①在非限定性定语从句中She lost the game, which depressed her greatly.②关系词置于介词之后，作宾语The pen with which you write is Jack’s.Let me show you the novel that I borrowed from the library which is newly open to us.(2)用that的情况①先行词是不定代词如all, little, few, much,anything, everything, nothing, none, no one等She did all that she could to help us.②先行词被all, every, no, some, little, much, the only, he very, the right，the last等所修饰时This is the very book that I want.③先行词中既有人又有物时She described in her compositions the people and he places that impressed her most.④先行词前有序数词或形容词最高级修饰时This is the best book that I have ever read.This is the first film that I’ve seen since I came here.⑤定语从句中套定语从句，其中一个关系词以用which, 另外一个用thatHe built a factory which produced things that had never been seen before.⑥当主句的主语是疑问词which,另一个用thatWho is the person that is standing at the gate?4.As引导定语从句用法(1)As 既可以引导限制性定语从句也可以用于非限定性定句中充当主语，宾语，表语等。
定语从句总结一：定语后置的总结〔1〕介词短语作定语：the landlady in the bad situation/ the way in error/ thethiefwith a gun / the communication in English /The student in sorrow didn’t pass the English exam.〔2〕表语形容词作定语：the presidents alive in the U.S.A are all male.〔3〕不定合成代词被修饰：Although I had dinner tonight, I still need something delicious tohave.〔4〕副词作定语：the students here are all come from Shenyang.〔5〕不定式作后置定语：the destination to go / the cookbook to use / the movie to cast/ the match to fire / the classical music to listen / the hammerto use / the task to finish〔6〕现在分词作定语：the man pronouncing the wrong pronunciation is a principal. 〔7〕过去分词作后置定语：the service given in the hotel is 5-star. / the signal signed bythe students are for cheating in the final exam.(P10-1) English is a language spoken all around the world.(P10) In only fifty years, English has developed into thelanguage most widely spoken and used in the world.〔8〕定语从句：〔P4〕The lesson (that) we can learn from Chuck and all others who haveunusual friends is that friends are teachers.二：定语从句的概念和公式特点(P3-1):关系代词在从句中作主语Chuck is a businessmanwho is always so busy that he has little time for his friends.先行词〔被修饰的名词或代词〕+ 关系词〔起连接作用的代词和副词〕+〔,〕定语从句〔在句中作成分〕三：定语从句的分类When I took the money from her grandfather, I looked back at the girl, who was giving me the prettiest, largest smile (that)I have ever seen.限定性定语从句和非限定性定语从句的区别1：限定性没有逗号，非有逗号。
高中英语语法归纳总结从句从句是英语语法中的一个重要部分。
它能够在句子中充当名词、形容词或副词的作用，增强句子的表达力和多样性。
本文将对高中英语语法中的从句进行归纳总结，帮助学生们更好地理解和应用从句。
一、名词性从句名词性从句可以在句中担任主语、宾语、表语和同位语的角色。
常见的名词性从句有以下几种类型。
1. 主语从句主语从句在句中充当主语的角色，常以“that”或“whether/if”引导。
例如：“What you said doesn't make sense.”（你说的话毫无意义。
）主语从句的引导词可以省略，直接使用动词来引导，例如：“To forgive is to forget.”（宽恕就是忘记。
）2. 宾语从句宾语从句在句中作为动词的宾语，常以“that”或连接词引导，例如：“He said that he would come.”（他说他会来。
）宾语从句的引导词可以根据从句的内容来选择，如“whether/if”、“when”、“where”等。
3. 表语从句表语从句在句中充当表语的角色，常以“that”引导，例如：“The fact is that he is ly ing.”（事实是他在说谎。
）4. 同位语从句同位语从句用来解释或说明名词的具体内容，常以“that”引导，例如：“The news that he won the prize surprised everyone.”（他获奖的消息让每个人都感到惊讶。
）二、形容词从句形容词从句用来修饰名词，常以“that”或“which”引导。
形容词从句通常紧跟在被修饰的名词之后。
例如：“The book that he recommendedis very interesting.”（他推荐的那本书非常有趣。
）三、副词从句副词从句可以修饰动词、形容词或副词，并且可以表示时间、地点、原因、方式、条件等。
常见的引导词有以下几种。
高中英语语法总结句式归纳高中阶段是学习英语语法的重要时期，掌握各种语法句式对于提高英语写作和口语表达能力至关重要。
本文将总结和归纳高中英语常用的语法句式，以帮助同学们更好地掌握英语语法知识。
一、名词性从句名词性从句在句子中起着名词的作用，可以作主语、宾语、表语或补语。
常见的名词性从句有以下几种句式：1. 主语从句主语从句常用来引导主句的主语，一般用以下几个连接词引导：that, whether, if。
例如：- That he is a brilliant student is undeniable.（他是一个优秀的学生是不可否认的。
）- Whether she will come to the party is still uncertain.（她是否会来参加派对还不确定。
）2. 宾语从句宾语从句常用来作主句的宾语，一般用以下几个连接词引导：that, whether, if。
例如：- I don't know if she can finish the task in time.（我不知道她是否能按时完成任务。
）- He asked me whether I had seen the movie.（他问我是否看过那部电影。
）3. 表语从句表语从句常用来作主句的表语，一般用以下几个连接词引导：that, whether。
例如：- My biggest concern is that we won't have enough time.（我最担心的是我们没有足够的时间。
）- The question is whether they will come to the meeting.（问题是他们是否会来开会。
）4. 同位语从句同位语从句用来解释或说明名词的内容，常用连接词that。
例如：- The fact that he won the competition surprised everyone.（他赢得比赛的事实让大家都感到惊讶。
01有关概念可以比较“复杂”，而复合句也可以比较“简单”。
如：He stopped because he was tired. 他停下来是因为他累了。
这个句子比较“简单”，却是一个典型的复合句，其中的he stopped是主句，because he was tired 是从句，在复合句中用作状语，表示原因。
02从句的分类前面我们说到从句是整个复合句的一个句子成分，它可以用作主语、宾语、定语、状语等。
一般说来，一个从句在复合句充当什么成分我们就叫它为什么从句——从句在复合句用作主语，我们就叫它为主语从句；从句在复合句用作宾语，我们就叫它为宾语从句；从句在复合句用作状语，我们就叫它为状语从句；等等。
如：He answered that he knew nothing about it. 他回答说他不知情。
The trouble is that I have lost his address. 麻烦的是我把他的地址丢了。
He was rather pleased when he won that prize. 他获奖后相当高兴。
She was not in the train that arrived just now. 她不在刚到的那列车上。
第一句中的that he knew nothing about it为宾语从句，因为它在复合句中用作动词answered 的宾语；第二句中的that I have lost his address为表语从句，因为它在复合句中用在连系动词is后作表语；第三句中的when he won that prize为状语从句，因为它在复合句中用状语，表示时间，所以也叫时间状语从句；第四句中的that arrived just now为定语从句，因为它在复合句中用作定语，修饰名词the train。
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。
高中英语从句大全英语基础概念：主句+从句=复合句1. 有关概念由一个主句和一个或一个以上从句构成的句子叫做复合句。
所谓主句，就是在复合句中起统领作用的句子，它是全句的主体，通常可以独立存在；而从句则是复合句的一个句子成分，不能独立存在。
如：You’ll feel better after you take the pills. 吃完药丸后你会感到好一些。
The police learned that he wasn’t there at that time. 警察获知他那时不在场。
这两句都是复合句，第一句的主句是You’ll feel better，从句是after you take the pills，由after引导，在整个复合句中用作状语，表示时间；第二句的主句是The police learned是主句，that he wasn’t there at that time是从句，由that引导，在整个复合句中用作宾语。
注意，英语的复合句不是简单句的反面，不要将它误解为“复杂句”。
事实上，英语的简单句有时也可以比较“复杂”，而复合句也可以比较“简单”。
如：He stopped because he was tired. 他停下来是因为他累了。
这个句子比较“简单”，却是一个典型的复合句，其中的he stopped是主句，because he was tired是从句，在复合句中用作状语，表示原因。
2. 从句的分类前面我们说到从句是整个复合句的一个句子成分，它可以用作主语、宾语、定语、状语等。
一般说来，一个从句在复合句充当什么成分我们就叫它为什么从句——从句在复合句用作主语，我们就叫它为主语从句；从句在复合句用作宾语，我们就叫它为宾语从句；从句在复合句用作状语，我们就叫它为状语从句；等等。
如：He answered that he knew nothing about it. 他回答说他不知情。
状语从句一．分类：adv.+that（如此……以致）so that（结果……）such+n.+that（如果……以致）that（所以，因此）让步状语从句：though/although不可同but连用。
though/although （虽然）however （可是）even though/if（即使）no matter+what/which/where/who/when=whatever/whichever/wherever/whoever/whenever（不论什么/哪一个/哪里/谁/何时）比较状语从句：as （正如）as…as（和……一样）not as/so … as （不如……）than（比……更）the+比较级…+the+比较级（越……越……）条件状语从句：if（假设）unless（如果不）so long as（只要）on condition that （如果）方式状语从句：as（像……那样地）just as（正像）as if（好像）as though（好像）二．各种状语从句的简化方法：1after/before+doing sth.作状语。
例：After she sang，she left the rich man's house．= After singing，she left the rich man's house．2．以as soon as引导的状语从句的主语若与主句主语一致时，从句等于on+doing sth.,作状语，此时的动词为非延续性动词。
例：Mary began to operate on the wounded soldiers as soon as he arrived at the village．= Mary began to operate on the wounded soldiers on arriving at the village．3．时间状语从句和条件状语从句的主语和主句主语一致时，有时可简化为不定式作状语。
干货高中英语语法归纳总结大全，高考必备1.定语从句引导定语从句的关系代词有that,which,who（宾格whom），所有格whose）和关系副词where when why 等，关系代词或关系副词在定语从句中充当一个成分，关系代词that，which,who,whom等在从句中分别作主语或宾语，whose 在从句中作定语，而关系副词when,where,why等在从句中作状语。
如：①I will never forget the days when/in which we worked together.②I will never forget the days which/that we spent together.解析：在句①中，表示时间的名词the days在从句中充当的是状语，所以用关系副词when来代指，引导定语从句修饰先行词the days；而在句②中，表示时间的名词the days在从句中充当的是动词spent的宾语，所以用关系代词that或which来代指。
同样，表示地点或原因的名词如果在从句中作状语，则用关系副词where 或why 来代指；如果在从句中作动词的宾语，则用which或that来代替。
如：①This is the factory where/in which I worked.（作状语）②This is the factory that/which I visited years ago.（作宾语）注：当先行词为time,reason, place时，引导词可以省略。
①This was the first (when/what) I had serious trouble with my boss.②That is the reason (why) I did it.③This is the place (where) we met yesterday.另外，定语从句中谓语动词的数应与先行词的数相一致。
高中英语从句考点汇总,建议收藏！语法是很多同学薄弱的地方，想要努力提分，却总是感觉有些力不从心？这几天小编将高中英语关于从句的内容全部整理了一遍，这部分内容也是考试中经常出现有容易出错的部分，大家赶紧收藏起来仔细学习，把不懂的语法内容都捋顺！一、主语从句在主句中用作主语的主谓结构称之为主语从句。
例句：That he will come to the discussion is certain. 他来参加讨论是确定的。
That the moon moves round the earth iswell known to all of us.月球绕地球转动，这是我们大家都熟知的。
When the meeting is to be heldhas not yet been decide.会议什么时候召开还没有决定。
主语从句放在句首，句子常常显得比较笨重，因此通常可以把it放在句首，作形式主语，而将主语从句放在后面。
例如上面的句子可以分别改写为：It is certain that he will come tothe discussion.It is well known to all of us thatthe moon moves round the earth.二、宾语从句在主句中作谓语动词、介词及非谓语动词的宾语的主谓结构称之为宾语从句。
在引导宾语从句时，从属连词that在口语中和非正式文本中常省略。
1. 动词后的宾语从句We know that a parrot can’t really speak.我们知道鹦鹉不会真的说话。
He wants to tell us what he thinks.他想告诉我们他所想的事情。
Knowing that it was going to rain, they decided to work inside the house.知道要下雨了，于是他们决定在室内工作。
1）主语从句1.定义：用作主语的从句叫做主语从句。
2.构成：关联词 +简单句3.引导主语从句的关联词有三类：（1）从属连词 that.如： That they were in truth sisters was clear from the facial resemblance between them.很明显，她们确是亲姐妹，她们的脸型很相似。
（2）从属连词 whether.如：Whether he’ ll come here isn ’t clear.他是否会来这里还不清楚。
（3）连接代词 who ， whom ，whose，what ，which ，whoever ，whatever， whichever连接副词where ，when， how ， why. 如：What she did is not yet known. 她干了什么尚不清楚。
How this happened is not clear to anyone. 这事怎样发生的，谁也不清楚。
Whoever comes is welcome. 不论谁来都欢迎。
Wherever you are is my home——my only home. 你所在的任何地方就是我的家——我唯一的家。
解释：1.主语从句能用it 作形式上的主语。
常以it 作形式主语的句型有：A.It+be+ 形容词（ obvious， true， natural， surprising ， good， wonderful ，funny ，possible， likely ，certain， probable， etc.） +that 从句。
如：It is certain that she will do well in her exam.毫无疑问她考试成绩会很好。
It is probable that he told her everything. 很可能他把一切都告诉她了。
B.It+be+ 名词词组（ no wonder ，an honor，a good thing，a pity ，no surprise，etc. ）+that 从句。
如：It ’ s a pity that we can ’ t go.很遗憾我们不能去。
It ’ s no surprise that our team should have won the game. 我们没赢这场比赛真意外。
C.It+be+ 过去分词（ said，reported，thought ，expected，decided，announced， arranged，etc.）+that 从句。
如：It is said that Mr.Green has arrived in Beijing.据说格林先生已经到了北京。
It is reported that China has sent another man-made earth satellite into orbit.据报道中国又成功地发射了一颗人造地球卫星。
D.It+seem ， happen 等不及物动词及短语+that 从句。
如：It seems that Alice is not coming to the party at all.Alice似乎不来参加晚会。
It happened that I was out that day. 碰巧我那天外出了。
E.It+doesn ’ t matter（ makes no difference ， etc.）+连接代词或连接副词引起的主语从句。
如：It doesn ’ t matter whether she will come or not. 她是否来这无关紧要。
It makes no difference where we shall have the meeting. 我们在哪里开会毫无区别。
F. 当 that 引导的主语从句出现在疑问句中时，要以it 作形式主语，而把主语从句后置。
如：Is it true that the scientist will give us a lecture next week？下周那位科学家将给我们作报告是真的吗？Does it matter much that they will not come tomorrow？他们明天不来很要紧吗？G.当主语从句出现在感叹句中时，要以it 作形式主语，而把主语从句后置。
如：How strange it is that the children are so quiet ！孩子们这么安静真奇怪！2.注意连接代词whoever ，whatever ， whichever 等引导主语从句的含义。
Whoever comes will be welcome. （whoever=the person who ）来的人将受到欢迎。
Whatever he did was right. （whatever=the thing that ）他所做的事情是正确的。
Whichever of you comes in will receive a prize.（whichever=anyone of you who）你们当中不论哪个进来将会得到奖2）表语从句1.定义：用作表语的从句叫做表语从句。
2.构成：关联词 +简单句3.引导表语从句的关联词的种类：（ 1）从属连词that.如：The trouble is that I have lost his address. 麻烦是我把他的地址丢了。
（2）从属连词 whether ， as， as if. 如：He looked just as he had looked ten years before. 他看起来还与十年前一样。
The question is whether they will be able to help us. 问题是他们是否能帮我们。
注：从属连词 if 一般不用来引导表语从句，但 as if 却可引导表语从句，如：All this was over twenty years ago ， but it’ s as if it was only yesterday.这都是 20 多年前的事了，但宛如昨天一样。
能跟表语从句的谓语动词一般为系动词be， seem， look 等。
如：It looked as if it was going to rain. 看起来天要下雨了。
（3）连接代词 who ， whom ，whose，what ，which ，whoever ，whatever， whichever连接副词where ，when， how ， why.如： The problem is who we can get to replace her. 问题是我们能找到谁去替换她呢。
The question is how he did it. 问题是他是如何做此事的。
That was what she did this morning on reaching the attic. 那就是她今晨上了阁楼干的。
解释：1.连词 because可引导表语从句。
如：I think it is because you are doing too much. 我想这是因为你做得太多。
2.在一些表示“建议、劝说、命令”的名词后面的表语从句中，谓语动词用虚拟语气。
should+动词原形表示， should 可省略。
如：My suggestion is that we（should）start early tomorrow.我的建议是我们明天一早就出发。
3）宾语从句1.定义：用作宾语的从句叫宾语从句。
2.构成：关联词 +简单句。
3.引导宾语从句的关联词有三类：（ 1）从属连词that.如：He told us that he felt ill. 他对我们说他感到不舒服。
I know he has returned. 我知道他已经回来了。
注：that 在引导宾语从句时也并不是任何情况下都可以省略。
在以下情况下，that 不能省略。
1.Everybody could see what happened and that Tom was frightened. （and 连接两个宾语从句， that 宾语从句放在 and 的后面时， that 不能省略。
）大家都会看出所发生的事情并知道Tom 非常害怕。
2.I know nothing about him except that he is from the south. （that 引导的宾语从句作介词宾语时，that 不能省略。
）对他我一无所知，只知道他是南方人。
3.That he ever said such a thing I simply don ’ t believe. （ that 从句位于句首时，that 不可省略。
）我简直不相信他曾说过这样的话。
4.We decided，in view of his special circumstances ，that we would admit him for a probationary period.（主句谓语动词与that 从句之间有插入语，that 不可省略。
）鉴于他的特殊情况，我们决定应允他一段试用期。
（2）从属连词 if/whether. 如：I doubt whether he will succeed. 我怀疑他是否会成功。
I don ’ t know if you can help me. 我不知道你能否帮助我。
（3）连接代词 who ， whom ，whose，what ，which ，whoever ，whatever， whichever连接副词where ，when， how ， why.如：Who or what he was ， Martin never learned.他是什么人？他是干什么的？马丁根本不知道。
I wonder what he ’s writing to me about. 我不知道他要给我写信说什么事。
I ’ ll tell you why I asked you to come.我会告诉你我为什么要你来。
You may do what you will.你可做任何你想做的事。
（1）介词宾语从句宾语从句也可用作介词的宾语。
如：He was deeply displeased by what had occurred that day.他对那天发生的事感到很不快。
I walked over to where she sat. 我走向她坐的地方。
