课题：三大从句复习
名词性从句、状语从句、定语从句
一、概述
●语法复习专题课
●本课题所需课时为3课时
二、教学目标分析
●掌握三大从句在句子中的功能用法。
●能正确区分和使用各从句的引导词。
●常见考点
三、学习者特征分析
1．学习对象为高三年级的学生，对各项语法知识已有一定的了解。
2．学生对三大从句的用法不太清楚，对引导词区分和使用和句子结构分析能力还不够强。
四、教学策略选择与设计
本专题教学中运用的教学模式是传统课的归纳与点拨，练习巩固
五、教学资源
编辑的PPT课件
六、教学过程
1．归纳
2．点拨
3．提问
4．练习巩固
Noun Clauses (Revision)
一、Teaching goals
1. Target language
a. Conjunctions:
That whether if as if (as though) what whatever who whoever whom whose which when where why how
b. Sentences:
1)You know that I am an English teacher.
2)That I am an English teacher is known to you all.
3)The fact that I am an English teacher is known to you all.
4)I’m worried about whether you can do well in the exam.
5)What I am worried about is whether you can do well in the exam.
2. Ability goals
Enable students to use the conjunctions of different noun clauses correctly.
3. Learning ability
Help students learn how to use the conjunctions of different noun clauses correctly.
二、Teaching important points
The use of the conjunctions of different noun clauses
三、Teaching difficult points
How to use the conjunctions correctly
四、Teaching methods
task-based learning summarizing and practicing
五、Teaching aids
A computer and projector
六、Teaching procedures
Step I
Show the students some sentences with noun clauses and ask them to find out the clauses and tell the function of them
Step II Explanation and summary (ask the Ss to discuss in group first)
1. What is a noun clauses?
2. Noun clauses include: Subject, Object, Predicative and Appositive Clause.
3. Questions: (give some examples of different noun clauses then ask the following questions) Subject Clause
1.Can we use “if” instead of “whether”?
2. What’s the difference between “that” and “what”?
3.When the Subject Clause is too long, what should we do?
4.Can the conjunction “that” be left out in the Subject Clause?
Object Clause
1. Can the conjunction “that” be left out in the Object Clause?
2.Can we use “if” instead of “whether” in the fifth sentence?
Predicative Clause
1. Can we use “because” in place of “that” in the fourth sentence ?
2. Can we use “if” instead of “whether” in the sixth sentence?
Appositive Clause
1. Besides “idea, word, suggestion”, can you li st more words?
Step III
1. Summarize the conjunctions of noun clauses
2. Tell whether the following clauses are right ( ppt 课件)
Step IV
Practice: Choose the best answer (往届高考单选题)
Step V
Complete the following sentences with noun clauses( Chinese →English) Step VI
Join two sentences into one with an Appositive Clause.
Step VII Home work
Finish the Ex. in English Weekly（语法专项练习）
Adverbial Clauses (Revision)
一、Teaching goals
1. Target language
1)As soon as I arrive in Beijing, I’ll telephone you.
2)Wherever I go, he always follows me.
3)As lone as you study hard, you’ll succeed in time.
4) A. They missed the bus, so that they were late for class.
B. The teacher is so good that we all like him.
C. I got up early so that I could catch the first bus.
5)He treated us as if we were his own children.
2. Ability goals
Enable students to use the conjunctions of different adverbial clauses correctly.
3. Learning ability goals
Help students learn how to use the conjunctions of different adverbial clauses correctly.
二、Teaching important points
1. The use of the conjunctions of different adverbial clauses
2. Ellipsis in adverbial clauses
三、Teaching difficult points
How to use the conjunctions correctly
四、Teaching methods
task-based learning summarizing and practicing
五、Teaching aids
A computer and a projector
六、Teaching procedures
Step I Leading in
1.Show the students the groups of sentences (1~5) then ask them to translate these
sentences, notice if they can translate the conjunctions correctly.
2.Questions(discuss in groups):
1)What kind of clauses are they?
2)What are adverbial clauses?
(Adverbial clauses are those that perform the function of adverbial in a complex
sentence.)
3)What kind of adverbials can the clauses serve as?
4)Can you tell us the difference between the adverbial clauses of result and purpose from
the fourth group of the sentences?
( A “so that-clause” can denote purpose and result, while a “so…that-clause” denote result only. When there is a modal in a “so that-clause”, the clause mostly denotes purpose; if not, it express result. So in the fourth group of sentences, the first and the second ones are the adverbial clauses of result, while the third is the adverbial clause of purpose.)
3.Ask the Ss try to use different conjunctions to express the same meaning with the five
sentences, then show some examples on the screen.( ppt 课件)
4.Help the Ss to sum up the conjunctions of different kind of adverbial clauses
and show them on the screen. ( ppt 课件)
Step II Practice ( ppt 课件)
1.Fill in the blanks with proper conjunctions.(explain the use of : 1) when, while,
as 2) since, as, for, because)
https://www.doczj.com/doc/a113180457.html,plete the following sentences with adverbial clauses( Chinese →English) Step III: Ellipsis in adverbial clauses
Show some examples of different kinds of adverbial clauses. Help the Ss try to find out the rule.
(如果从句中的主语和主句中的主语一致，就可以经过一定的变动把状语从句
中的主语和谓语的一部分或全部省略, 从而使语言更加简洁、明了。)
Step VI Home work
Finish the Ex. in English Weekly（语法专项练习）
Attributive Clauses (Revision)
教学过程: (详细内容参阅PPT课件)
Step I 1、引导学生复习定语从句的概念以及引导定语从句的关系词。
2、引导定语从句的关系词的用法。
Step II 1、选用适当的关系词填空。
2、改错
引导学生学会如何通过分析正确选用关系词以及如何判断句子的错误。Step III 用that或which填空(参阅PPT课件)
1、提醒学生在做题过程中注意先行词的词性和它前面的修饰语。
2、帮助学生归纳只能用that或只能用which, who, whom的情况。Step IV 如何判断介词
1、让学生在下面各句子的空格中填上适当的介词(参阅PPT课件)
2、引导学生讨论找出判断介词的方法：
1）看动词与介词的搭配。
2）形容词与介词的搭配。
3）根据先行词判断。
Step V 练习(参阅PPT课件)
1、将下面各题中的两个句子合并成一个带定语从句的句子。
2、用定语从句翻译下列句子。
Step VI HOMEWORK
?英语周报?定语从句专项练习
初中英语语法——三大从句汇总 在英语中，主要有三大从句，即名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）、形容词性从句（即定语从句）、副词性从句（即 状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等）。以 下是一些基本的从句的语法知识点 A、定语从句专项讲解与训练 一、定语从句概念 定语从句（attributive clause），顾名思义，就是一个句子作定语从属于主句。定语一般是由形容词充当，所以定语从句又称作形容词从句。另外，定语从句是由关系代词或关系副词引导的，故又称作关系从句。 定语从句一般放在它所修饰的名词或代词之后，这种名词或代词被称作先行词。请看示例： The woman who lives next door is a teacher. 先行词定语从句 在所有的从句中，算定语从句最难掌握，因为汉语里没有定语从句，汉语里只有定语，而且总是放在名词之前来修饰名词。 二、关系代词引导的定语从句 关系代词代替前面的先行词，并且在定语从句中充当句子成分，可以作主语、宾语、定语等。常见的关系代词有：who, that, which。它们的主格、宾格和所有格如下表所示： 先行词主格宾格所有格 人 who whom whose 物 which which whose of which 人、物 that that — （一）关系代词who, whom和 whose的用法 who代替人，是主格，在定语从句中作主语。例如： An architect is a person who designs buildings. 建筑师是设计房屋的人。
I will never forget the teacher who taught us chemistry in the first year of my senior middle school.我将永远不会忘记在高一时教我们化学的那位老师。 Anyone who wants to apply for this job must send us the resume by email first. 想应聘这个职位的任何人都必须先通过电子邮件向我们发送简历。whom代替人，是宾格，在定语从句作宾语，在非正式英语常可省略。例如：Do you know the gentleman whom we met in the school library yesterday? 昨天我们在学校图书馆里遇到的那位先生你认识吗？ This is the student whom my father taught ten years ago.这是我爸爸十年前教的学生。 The girl who I saw is called Mary. 我见到的那个女孩名叫玛丽。（在非正式英语中，主格who代替了宾格whom，亦可省略） whose一般代替人，有时亦可代替物，是所有格，在定语从句作定语。例如：The girl student whose father is a senior engineer used to study abroad. 其父是一位高级工程师的那个女学生过去在国外留学。 Do you know the name of the hotel whose window we can see here? 我们这儿能看到窗户的那个宾馆叫什么名字，你知道吗？（关系代词whose指代先行词hotel，正式用法应该用of which。whose window=the window of which，意思是：the window of the hotel。） （二）关系代词which的用法 which代替物，在定语从句作主语或宾语，作宾语时还可省略。例如： I do not like stories which have unhappy endings. 我不喜欢有不幸结局的小说。（which可以换成that） Tom works for a factory which makes watches. 汤姆在一个制表厂工作。（which可以换成that） （三）关系代词that的用法 that既可指人又可指物，在当代英语中大多指物，在定语从句作主语或宾语，作宾语时还可省略。例如： Is she the girl that sells newspapers? 她是卖报纸的那个女孩吗？（that可以换成who） Where is the ice-cream that was in the fridge?
中考从句讲与练 定语从句： （一）基础：引导词---who, which, that, whom, 练习1.I like cities___________are quiet and clean. 2.I prefer students _________are hard- working. 3.I hate TV shows _________ are noisy and boring. 4.The music __________ is gentle and quiet attracts me a lot. 5.The food __________tastes delicious is not always healthy. 6.Those boys ___________ are playing basketballs over there are from Class Fifteen. 7.The books ____________ are written by Lu Xun are worth reading. 8.The town ___we visited last week is much larger than before.9.The book ___ he bought is very interesting. （二）特例：只用that的情况 1先行词被___________或___________所修饰，或本身是______________________时，只能用 that， 2.被修饰的先行词为 ________________________________________________等不定代词时, 只能用 that. 3.先行词被 _____________________________________________等词修饰时，只能用 that，而不用 which。 4.先行词里同时含有______________________，如I can remember well the persons and some pictures that I saw in the room. 5. 以______________________引导的特殊疑问句，只能用that.如： Who is the girl that is crying? 练习1. I am interested in everything___ is about the 2006 World Cup. 2. Is there anything___I can do for you? 3. This is the very bike ______I lost 4.To my surprise, he gave me nothing __ I need. 5.This is the best dictionary __ I have ever used. 6. He was the first person _______passed the exam. 7.He talked happily about the men and books________interested him greatly. （三）whose 1. The student ______father works in the factory is sitting there. 2. I like the rooms ______windows face south. 3. This is the desk ______legs were broken. 4The woman ___ umbrella you took is angry about it.5.Here comes a girl ___ handwriting is the best . 6The banana __skin is green can’t be eaten.7That tall tree _ leaves are yellow is very old. （四）从句谓语单复数由先行词确定，时态由从句时间状语决定，不必跟主句保持一致。 1-He is one of the boys who ____ (doesn’t, don’t) finish doing homework. 2-I like films which ____(be) exciting and interesting. 3-Children who often ____(eat) junk food are easy to become fat and unhealthy. 4-That boy who _____(run) fastest is from our class. 5Those boys who ____ playing the guitar are from our school. (be) 6The trees which _____ (be) watered yesterday belong to them. 7The man who ____ over there is our teacher.(stand) 8Those boys who ____ playing the guitar are from our school. (be) 9Mr. Brown is one of the foreign experts _______ _________ (work) in China. 10I’m one of the boys ______ ________(like) English best. (五)“介词＋关系代词”注意：介词的选用要考虑： A.与先行词的搭配关系 1）I will never forget the day __________ I joined the army. 2) I will never forget the days ______ I worked here. 3) I will never forget the year ____________ my son went to college. B. 与谓语动词的搭配习惯 1）Have you found the book ________I paid 29 dollars? 2）Have you found the book ________I spent 29 dollars? 3)Have you found the book _____________we learnt a lot? 4) Have you found the book _______she often talks? 关系副词的用法 练习：1. It must be a good place ________________we can do a lot of exercise.
从句 从句按其在主句中的句法功能可分为三类: 即名词性从句、形容词性从句(即定语从句)和副词性从句(即状语从句)。 引导从句的词称作关联句. 一、名词性从句 引导这些名词性从句的关联词包括: 从属连词that, if, whether; 连接代词 who,whoever,whom,whomever,which,whichever,what,whatever,wh ose; 连接副词where, when, why, how。 其中, 从属连词只起连接作用, 在从句中不充当任何句法成分, 而连接代词和连接副词既起连接作用, 在从句中又充当一定的成分. That Owen should have married his cousin is not at all surprising. The fact is that he didn't go to the dinner party. I don't know if he will attend the meeting. Have you heard the news that Mary is going to marry Tom? 你听说玛丽要和汤姆结婚的消息了吗?(that引导同位语从句) [提示]
1. 在含有主语从句的复合句中, 为保持句子平衡, 常用it作形式主语,而将真正的主语从句置于句末. It's well-known that water is indispensable to life.(形式主语) 2. 为保持句子平衡, that引导的宾语从句也常用it代替, 而将真正的宾语从句置于主句句末。这常常出现在主句有形容词或分词作宾语补足语的情况下。 He made it quite clear that he preferred to live here. 3. 从属连词whether和if都作“是否…”解, 但if不可引导主语从句和表语 从句。whether可与or(not)连用, 而if不可以。 I don't know whether (if) she is at home. Whether she comes or not makes no difference. 4. that和what引导名词性从句的区别: that在从句中不充当成分,而what在从句中充当一定的成分, 如主语、表语、宾语等。that可省略, what则不可省。 He always means what he says. She suggested (that) he do it at once. 5. 同位语从句大多由从属连词that引导, 常跟在下列名词后面, 如fact, idea, opinion, news, hope, belief等, that不可省。同位语从句一般用来解释说明这些名词的具体含义和内容。 We are familiar with the idea that all matter consists of atoms. The news that we are invited to the conference is very encouraging.
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.名词性从句句法结构： 从 属 连 词that whether 主 语 从 句 That he will come is certain.（that不可省） Whether she is coming or not doesn’t matter too much. （不能用if） 宾 语 从 句 I think（that）he will be all right in a few days. I went in and asked if（=whether）they had a cheap suit. I wonder whether（不能用if）it is true or not. 表 语 从 句 The fact is（that）I have never been there. The question is whether（不能用if）it is worth doing. 同 位 语 从 句 The fact that she had not said anything surprised all of us. They asked me the question whether the work was worth doing. 连接代词 that who whom whose which 主 语 从 句 Who will help him is not known. What he said is very important. Which side will win is not clear. 宾 语 从 句 （1）作及物动词的宾语。例如： I really don’t know what he is doing. Do you know who/whom they are waiting for? He asked whose dictionary it was. He can’t tell which method they will use for the experiment. （2）作介词的宾语。例如： Pay attention to what the teacher said. I wondered to whom he had given the letter. 表 语 从 句 That is what he is worried about. The question is who will come here. The question is which team will win the match.
中考英语三大从句练习及答案解析 定语从句： （一）基础：引导词---who, which, that, whom, 练习1.I like cities___________are quiet and clean. 2.I prefer students _________are hard- working. 3.I hate TV shows _________ are noisy and boring. 4.The music __________ is gentle and quiet attracts me a lot. 5.The food __________tastes delicious is not always healthy. 6.Those boys ___________ are playing basketballs over there are from Class Fifteen. 7.The books ____________ are written by Lu Xun are worth reading. 8.The town ___we visited last week is much larger than before.9.The book ___ he bought is very interesting. （二）特例：只用that的情况 1先行词被___________或___________所修饰，或本身是______________________时，只能用 that， 2.被修饰的先行词为 ________________________________________________等不定代词时, 只能用 that. 3.先行词被 _____________________________________________等词修饰时，只能用 that，而不用which。 4.先行词里同时含有______________________，如I can remember well the persons and some pictures that I saw in the room. 5. 以______________________引导的特殊疑问句，只能用that.如： Who is the girl that is crying? 练习1. I am interested in everything___ is about the 2006 World Cup. 2. Is there anything___I can do for you? 3. This is the very bike ______I lost 4.To my surprise, he gave me nothing __ I need. 5.This is the best dictionary __ I have ever used. 6. He was the first person _______passed the exam. 7.He talked happily about the men and books________interested him greatly. （三）whose 1. The student ______father works in the factory is sitting there. 2. I like the rooms ______windows face south. 3. This is the desk ______legs were broken. 4The woman ___ umbrella you took is angry about it.5.. 6The banana __skin is green can’t be eaten.7That tall tree _ leaves are yellow is very old. （四）从句谓语单复数由先行词确定，时态由从句时间状语决定，不必跟主句保持一致。 1-He is one of the boys who ____ (doesn’t, don’t) finish doing homework. 2-I like films which ____(be) exciting and interesting. 3- 4-That boy who _____(run) fastest is from our class. 5Those boys who ____ playing the guitar are from our school. (be) 6The trees which _____ (be) watered yesterday belong to them. 7The man who ____ over there is our teacher.(stand) 8Those boys who ____ playing the guitar are from our school. (be) 9Mr. Brown is one of the foreign experts _______ _________ (work) in China. 10I’m one of the boys ______ ________(like) English best. (五)“介词＋关系代词”注意：介词的选用要考虑： A.与先行词的搭配关系 1）I will never forget the day __________ I joined the army. 2) I will never forget the days ______ I worked here. 3) I will never forget the year ____________ my son went to college.
名词性从句练习题 1._______ you have done might do harm to other people. A. That B. What C. Which D. This 2. They have no idea at all ____________. A. where he has gone B. where did he go C. which place he has gone D. where he has been 3. _____________ leaves the room last ought to turn off the lights. A. Anyone B. The person C. Whoever D. Who 4. Upon graduation he asked to be sent to _______________. A. where he is most needed B. where he needed C. where he is mostly needed D. where is he mostly needed 5. The early years of the D.U company were characterized by a debate concerning or individual form should have more power. A. whether the cooperation form B. either the cooperation form C. that cooperation form D.the cooperation form 6. Can you make sure _____________ the gold ring? A. where Alice had put B. where had Alice put C. where Alice has put D. where has Alice put 7. No one can be sure _____________ in a million years. A. what man will look like B. what will man look like C. man will look like what D. what look will man like 8. _____________ the Games will be held in Beijing is not known. A. Whenever B. If C. Whether D. That 9. It worried her a bit _____________ her hair was turning grey. A. which B. that C. if D. for 10. _____________ you don't like him is none of my business. A. What B. Who C. That D. Whether 11. _____________ he said at the meeting astonished everybody present. A. What B. That C. The fact D. The matter 12. He asked _____________ for the violin. A. did I pay how much B. I paid how much
定语从句 一、基本概念： 定语： 定语从句： Do you know the man who spoke at the meeting just now That is the house where he lived ten years ago. 引导词：关系词 关系代词有：that, who, whom, whose, which; 在从句中充当： 关系副词有：when, where, why. 在从句充当： 先行词： 定语从句中引关系词的作用： 二、关系词的用法： （一）关系代词的用法： 1． He is the man lives next door. The train has just left is for Shenzhen. 2． The man ________ we have just seen is a famous writer. Where is the book ___________I bought last week （二）关系副词的用法： 1． I still remember the time ________I first became a college student. Do you know the date __________Lincoln was born
(三) 使用关系副词应注意下列几点： 1．这三个关系副词在意义上都相当于一定的介词+which结构： when = on (in, at, during…) + which; where = in (at, on…) + which; why = for which. 如： I was in Beijing on the day when (=on which) he arrived. The office where (=in which) he works is on the third floor. This is the chief reason why (=for which) we did it. 2．当先行词是表时间的time, day等和表地点的place, house等时，一定要注意分析从句的结构，如果缺少主语或宾语时，关系词应该用which或that, 缺少时间状语或地点状语时，才能用when或where，试比较： I’ll never forget the day _________ my hometown was liberated. I’ll never forget the days____________we spent together last summer. His father works in a factory____________radio parts are made. His father works in a factory______________makes radio parts. 三．限制性定语从句与非限制性定语从句 1．限制性定语从句 This is the telegram which he refers to. Is there anything (that) I can do for you 2．非限制性定语从句 This note was left by Tom, who was here a moment ago. As a boy, he was always making things, most of which were electric.
一. 宾语从句object clause： 一. 定义definition： 在句子中起宾语作用的从句叫做宾语从句。 二. 连接词connections： that: I think that you can pass the exam. Whether/if: I don’t know what the word means. “Wh”: I don’t know what the word means. I don’t know where he found the book. 只用whether的情况： 1. 与or not连用： I don’t know whether it’s raining or not. 2. 与动词不定式连用： He doesn’t know whether to accept the invitation. 3. 连接词前有介词时： It depends on whether he is coming. 三. 时态tenses: 1. 主句是一般现在时态，从句根据实际情况而定(各种时态均可) She wants to know what he has done for the exam. 2.主句是一般过去时态，从句用相应的过去的时态。 1）She said that she was a student. 2）She said that she would fly to Japan in a week. 3）She said that she had finished her homework already. 3. 如果宾语从句说的是客观真理、自然现象或事实时，这时宾语从句要用一般现在时态。 The teacher said that the earth goes round the sun. 二. 定语从句Attributive clause： 1.定义：在复合句中修饰名词、代词的从句叫定语从句 2.先行词指人who /that 先行词指物which/ that 3. 定语从句一般紧跟被修饰的名词或代词（即先行词）后 4.关系代词代替先行词在句子中担当成分，所以从句中不可再出现其他代替先行词的代词 5.翻译方法“…. 的” Eg. 1. Yesterday we bought a book which is really hard to understand. 2. The students who are from Maple Leaf School like learning English. Whom: 先行词指人，则代替先行词在定语从句中充当宾语（包括介词的宾语）, 与who的区别是如果前面带介词则必须用whom 1.This is the teacher whom\who we like best. 2. I don’t like the boy to whom you are talking. Whose : 指人或物，作定语，表示“…的” eg: Harry is the boy whose mother is our math teacher.
第五讲并列句和三大从句 第一组定语从句 1.(2020辽宁大连双基测试，)The 55-km Hong Kong Zhuhai-Macao Bridge, ____________________was opened on Oct. 24, 2018connects Guangdong Province with China's two special administrative regions, Hong Kong and Macao. 2.(2020黑龙江哈尔滨三中二调，)In 1984,Dr.Mary Groda-Lewis, ____________________was thirty-five years old then, graduated with honors and realized her dream 3.(2020陕西咸阳)He said,"...I added a small moustache____________________would add age without hiding my expression." 4.(2020新疆乌鲁木齐二诊)The act,____________________forbids trading, was passed in 1448 and is still in force. 5.(2020陕西汉中一模，41)Our office wasn't far from Chinatown,____________________ I found some very good Chinese restaurants 6.(2020黑龙江大庆一中)As more and more people own private cars, parking has become a big headache for many car owners, especially for those____________________ live in downtown areas without enough parking spaces. 7.(2019黑龙江哈尔滨六中二模，61)Now millions of fans are eagerly awaiting its eighth and final season,____________________starts on April 14. 8.(2018陕西宝鸡质检，65)Then,a fire,____________________broke out in1969 on Cleveland's Cuyahoga River, shed light on the problem of chemical pollution in water. 【答案】 1.which 句意：长55公里的港珠澳大桥于2018年10月24日开通，它将广东省与中国的两个特别行政区——香港和澳门——连接起来。设空处引导定语从句，指代先行词The 55-km Hong Kong-Zhuhai-Macao Bridge,关系代词在从句中作主语，故填which。 2.who 句意：1984年，Mary Groda-Lewis博士以优异的成绩毕业并实现了自己的梦想，当时她35岁。先行词为Dr.Mary Groda-Lewis,设空处引导非限制性定语从句，在从句中作主语，故填关系代词who。 3.which 句意：他说：“……我增加了一小最胡子，这会在不掩盖表情的情况下让我看起来年龄大些。”分析句子结构可知，设空处引导非限制性定语从句，先行词为a small moustache,故用关系代词which。 4.which 句意：这项禁止贸易的法令于1448年通过，至今仍然有设空处指代先行词Theact,故由which引导
【初中英语语法——三大从句之表语从句】 【表语从句】 表语从句就是用一个句子作为表语。说明主语是什么或者怎么样，由名词、形容词或相当于名词或形容词的词或短语充当，和连系动词一起构成谓语。 表语从句只能置于主句之后，而主句的动词只能是联系动词。 名词性从句在be等系动词后作表语时被称为表语从句，例如： T he problem is how we can get the things we need.问题是我们怎样能弄到我们需要的东西。(how 在表语从句中充当方式状语)// The s cissors are not what I need. 这把剪刀不是我所需要的。(what 在表语从句中充当宾语)// What I told him was that I would find h im a good play. 我告诉他的是我会给他找个好剧本。(what在主语从句中作直接宾语， that作为表语从句的引导词在该表语从句中不充当句子成分，不能省略)// That is what I want to tell you.那就是我想要对你讲的。(what在表语从句中充当直接宾语)// That is why she failed to pass the exam. 那就是她考试不及格的原因。(why 在表语从句中充当原因状语) “That is why...”是常用句型，意为“这就是……的原因/因此……”，其中why引导的名词性从句在句中作表语，该句型通常用于针对前面已经说明过的原因进行总结，又如： That is why you se
e this old woman before you know, Jeanne. 珍妮，这就是现在这 个老太婆出现在你面前的原因。(前文提到Jeanne对老妇人显得苍老憔悴深感诧异，说话人对她讲述了其中的原因之后，用这一句来进行概括)。// That is why I came. 这就是我来的原因。 下面是两个与“That is why...”形式相似的结构，它们与“Tha t is why...”结构之间的关系要能够辨析清楚： (1)“That is why...”与“That is the reason why...”同义，只不过从语法结构上讲，“That is the reason why...”中why引 导的是—个定语从句，将其中的the reason去掉则与“That is why...”结构一样，例如： That is (the reason) why I cannot agree. 这就是我不能同意 的理由。 (2)“That is because...”句型中从属连词because引导的名词 性从句在此作表语，这也是个常用句型，意为“这就是为什么……/ 因为……”。“That is because...”与“That is why...”之间的不同在于“That is because...”指原因或理由，“That is why...” 则指由于各种原因所造成的后果，例如： He did not see the film last night. That is because he ha d to help his littl e sister with her homework.昨天晚上他没有
在英语中，主要有三大从句，即名词性从句（包括主语从句，宾语从句，表语从句，同位语从句）、形容词性从句（即定语从句）、副词性从句（即状语从句,包括时间、条件、结果、目的、原因、让步、地点、方式等）。 以下是一些基本的从句的语法知识点 A、定语从句专项讲解与训练 一、定语从句概念 定语从句（attributive clause），顾名思义，就是一个句子作定语从属于主句。定语一般是由形容词充当，所以定语从句又称作形容词从句。另外，定语从句是由关系代词或关系副词引导的，故又称作关系从句。 定语从句一般放在它所修饰的名词或代词之后，这种名词或代词被称作先行词。请看示例： The woman who lives next door is a teacher. 先行词定语从句 在所有的从句中，算定语从句最难掌握，因为汉语里没有定语从句，汉语里只有定语，而且总是放在名词之前来修饰名词。 二、关系代词引导的定语从句 关系代词代替前面的先行词，并且在定语从句中充当句子成分，可以作主语、宾语、定语等。常见的关系代词有：who, that, which。它们的主格、宾格和所有格如下表所示： 格 先行词主格宾格所有格 人who whom whose 物which which whose of which 人、物that that — （一）关系代词who, whom和whose的用法 who代替人，是主格，在定语从句中作主语。例如： An architect is a person who designs buildings. 建筑师是设计房屋的人。 I will never forget the teacher who taught us chemistry in the first year of my senior middle school. 我将永远不会忘记在高一时教我们化学的那位老师。 Anyone who wants to apply for this job must send us the resume by email first. 想应聘这个职位的任何人都必须先通过电子邮件向我们发送简历。 whom代替人，是宾格，在定语从句作宾语，在非正式英语常可省略。例如： Do you know the gentleman whom we met in the school library yesterday? 昨天我们在学校图书馆里遇到的那位先生你认识吗？ This is the student whom my father taught ten years ago. 这是我爸爸十年前教的学生。 The girl who I saw is called Mary. 我见到的那个女孩名叫玛丽。（在非正式英语中，主格who代替了宾格whom，亦可省略） whose一般代替人，有时亦可代替物，是所有格，在定语从句作定语。例如： The girl student whose father is a senior engineer used to study abroad. 其父是一位高级工程师的那个女学生过去在国外留学。 Do you know the name of the hotel whose window we can see here? 我们这儿能看到窗户的那个宾馆叫什么名