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定语从句一、定语从句1．定语从句三步：第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语或状语）；第三选择合适的关联词。
2．定语从句在选择关联词that 与which时，常常容易出错，所以应记住什么时候只能用that，什么时候只能用which.（1）．只能用that 的情况归纳4种：即先得词被序数词最高级修饰过；先行词为all 、everything、nothing等不定代词；先行词同时是人和物并列时；最后先行词分别被the only 、the very the same、the last 修饰。
请看下列四组例句，注意其先行词：①．The first thing that we should do is to work out a plan.②．I t almost seemed as if the good man were trying to teach us all that heknew at this lesson.③．Later my father and Mr. Crosset talked for about half a four of thingsand persons that they remembered in school.④．This is the very dictionary that I want to find.（2）．只用which is 情况有两种情况：一是非限制性定语从句，关联词要用which；二是做介词宾语时只能用which。
请看下列两组例句：I said nothing, which made him more angry.I have the book about which you are talking.三、在定语从句的非限制性定语中，which 和as 是容易混淆的。
在很多情况下两者兼可互换，但在下列情况中不可互换：1、通常As可以放在整句的句首，而which，只能在逗号之后，as 本身含有“正如”，as 在定语从句中既可是主语也可做宾语。
Week 2 定语从句1一、课文内容填空（M1U2）1.Mom and Dad arrive back from vacation a day _________(early) than __________(expect).2.Eric runs in after it, __________(follow) by a big dog, __________(walk) very slowly.3.Mom! Dad! You’re back early! (Looking around room, sounding _________(fright) )4.The room is in a mess, ________ pizza boxes on the floor and dirty dishes in the sink.5.We left you _______ charge. We won’t tolerate such _________(behave) in our house.6.Eric sits on his bed. Daniel has his arms __________(cross) and looks upset.7.They don’t deserve an ___________(explain).8.They never even gave me a chance to defend __________(me).9.Maybe, but now that he has been so rude to us, I feel like we have to punish him or he won’trespect us.10.American English and British English differ _______ in many small ways.11.I studied a lot and stayed _______ very late.12.Miss Xu made an error and mixed ________ my results with someone else’s.13.I am writing to ask for some ________ (guide) about my 15-year-old son.14.How can I help my son without __________(harm) our relationship?15.It is also foolish ______of him to eat so many sweets.16.With a little bit of ___________(patient) and communication, many of these problems can besolved.17.He even forbids me _______ chatting with my friends in the Internet cafe.18.Many teenagers feel lonely, as _______ no one understands them and the changes they are going__________.19.As teenagers grow, it’s normal for them to become_______(confuse) with the changing world bot hinside and outside.20.Since teenagers have difficulty ___________(balance) these needs, they often question who theyare and how they fit in society.二、语法复习：定语从句（一）定语从句的相关概念:1. 定语从句，在句子中起定语作用，修饰___________或____________。
高一英语Module 2 Unit 6语法定语从句讲解定语从句在句中做定语，修饰一个名词或代词，被修饰的名词或代词即先行词。
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。
关系代词有：who, whom, whose, that, which, as等。
关系副词有：when, where, why等。
1 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。
1）who, whom, that这些词代替的先行词是人的名词或代词，在从句中作主语和宾语。
例如：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. 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互换即：whose+n=the +n+of which 或of which +the +n）。
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。
Please pass me the book whose cover is green.请递给我那本绿皮的书。
3）which, that所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等。
例如：A prosperity which / that had never been seen before appears in the countryside.农村出现了前所未有的繁荣。
（which / that在句中作宾语）The package （which / that）you are carrying is about to come unwrapped. 你拿的包快散了。
【高一同步教程】高中英语必修2 限制性定语从句和非限制性定语从句用法讲解根据定语从句在句中所起的作用，可分为限制性定语从句和非限制性定语从句两大类。
一、限制性定语从句限制性定语从句是先行词在意义上不可缺少的定语，用于修饰和限定先行词。
如果去掉，主句的意思就不完整或失去意义。
书写时不用逗号与先行词分开。
This is the boy who broke the window.这就是打破窗子的孩子。
（the boy是先行词，who broke the indow是限制性定语从句，明确指出the boy是打破窗子的那个孩子）I have a book which teaches English grammar.我有一本讲解英语语法的书。
（a book是先行词，which teaches English grammar是限制性定语从句，修饰the book）The people whom you met in the hall are from Japan.你在大厅见到的那些人来自日本。
（定语从句whom you met in the hall定先行词the people）二、非限制性定语从句非限制性定语从句在意义上只是一个附加修饰语，对先行词或主句作些附加的说明。
如果去掉，主句的意思仍然清楚。
书写时往往用逗号与先行词分开。
I, who am your friend, will share the work with you.我是你的朋友，将与你分担这项工作。
（I是先行词，who am your friend是非限制性定语从句，对先行词I起附加说明的作用）New Concept English is intended for foreign students, which is known to us all.新概念英语是专为外国学生编写的，这是我们大家都知道的。
（which is known to us all是非限制性定语从句，对主句作进一步的补充说明）三、在下列情况下，通常使用非限制性定语从句。
高中英语第2讲课 题定语从句 （一） 教学目标 1、掌握定语从句的概念、本质和结构；2、掌握关系代词和关系副词的用法。
教学内容【知识梳理】知识点1、定语从句an enjoyable experience 一次令人愉快的经历the best way to earn respect 赢得尊重的最好的方法an interesting book 一本有趣的书a popular TV show 受欢迎的电视秀The book that I borrowed from the library is interesting. 我从图书馆借的那本书很有趣。
The RAP of China which/ that I like best is a very popular TV show.定语从句的本质：（大的）形容词定语从句的概念：由关系代词或关系副词引导,来修饰名词或代词的从句叫做定语从句.定语从句的构成： 先行词(antecedent)——被从句修饰的名词或代词；关系词——引导从句的词，常见的有关系代词that; which; who; whom; whose （口诀： which 物,人用 who,人物都有 that 顾, 人做主语就用who, whom 只把宾语顾, whose 指人又指物,句中定语表所属）和关系副词（when ，where 和why ）。
e.g. 1. The teachers __________are present at our class are all experienced teachers.2. Yue Nan is the girl _______ English study is very good in our class.3. The school ___________ we are studying is very beautiful.4. ____ we all know, we need make full use of our time.※从句中缺主语，宾语找____________; 缺状语找__________;缺定语找___________.※ 定语从句的分类二者区别为：1.逗号；限制性定语从句 非限制性定语从句2.非限制性定语从句中的关系词还可以指代主句整句话的意思。
第二讲Part 1 定语及定语从句强化练习 1判断下面划线部分是否充当定语。
1.I don’t like lazy people.2.The boy in worn-out clothes is clever.3.The boy is standing under the tree.4.I know the boy under the tree.5.The student who is elected monitor is usually very capable.6.I don’t know who was elected monitor.强化练习 2下列定语从句中先行词的划分是否正确。
1.I will never forget the days which we spent together.2.The boy who is sitting in the classroom needs a pen.3. A dictionary is a tool which is of great importance in learning languages.4.I know a place which is famous for its beautiful natural scenery.5.The woman who I often visit is Tom’s mother.强化练习 3判断下面一段话中有几个定语从句。
I’m talking about friends who care deeply about each other, who support each other, who make life worth living. I’ m talking about friends who you can share almost everything with.A. 1个B. 2个C. 3个D. 4个Part 2 关系代词强化练习 1下列句子中的关系代词可省略的有哪些。
(多选)A. These are some questions which I want to ask you.B. The man who I phoned spoke Spanish.C. The factory that produces computers is far away from here.D. The professor that you are waiting for has come.E. The girl whom the teacher often praises is our monitor.强化练习 2单选1.I’d really like to find a friend ______ I can trust completely.A. whomB. whoseC. whichD. in whom2.The silk ______ is made in Hangzhou sells well.A. thatB. whoC. whatD. /3.I like guys ______ aren’t too serious and have a good sense of humor.A. whoB. whomC. whichD. /4.This is the place ______ he so often mentioned to me.A. in whichB. whereC. thatD. who5.These children sit in a schoolroom ______ windows are all broken.A. whoB. whichC. whoseD. thatPart 3 拓展阅读Pre-readingA Quiz. How much do you know about spiders? Circle true (T) or false (F) for the sentences below. Then check your answers at the bottom of the page.1. Scientists know of over 35,000 spider species. T F2. Spider web is stronger than steel. T F3. Some spiders make webs up to five times a day. T F4. All spiders make webs to catch food. T FB Definitions. Match the words with their meanings.1. material2. combine3. form (v)4. solid5. provide6. confuse7. realize 8. flexiblea. not a liquid or gasb. to understand or come to knowc. to make someone uncertain about somethingd. what something is made ofe. to make something in a particular shapef. easily changedg. to make or giveh. to make two things become one, to joinTextThey weigh almost nothing, yet they are stronger than steel. In fact, some spiders’ webs are among the world’s strongest materials, but they stretch more than elastic(橡皮圈). They can also be any shape. Spider webs are amazing.CHANGING FOR THE CONDITIONSA spider’s silk-making organ has hundreds of small openings. Silk comes out of these air, it becomes thread-like. These tiny threads combine to form a single, solid thread.The spider can make many different kinds of thread. The threads can be thick or thin, wet or dry, sticky or woolly. Each kind has a different purpose. Some webs create an egg case. Others provide hiding places. The most common purpose of a spider web, however, is to catch food.TRICKS FOR CATCHING DINNERThere are many ways the spider uses its web to catch prey. For example, some spiders spin a single thread. An insect then sits on it without realizing what it is doing, and becomes stuck. Slowly, the spider moves toward the insect. Suddenly, it covers its prey in silk.Argiope spiders use a different kind of trap. They make webs that confuse insects. An insect sees the web and thinks it’s a flower. It then lands on the web. The spider can feel even the smallest movement of the web, and rushes at the insect before it can get away.Spider webs are so amazing that engineers have been studying them for years. They want to learn why they are so strong and flexible. However, for the moment, spiders are keeping their secrets. Despite their science and technology, humans still haven’t been able to copy natural webs.ExerciseA Circle the correct answer.l. The reading is mainly about the ______ of spider webs. (gist)a. beautyb. human usesc. different types and uses2. According to the passage, which of these statements about spider webs is true? (detail)a. A single thread is actually many smaller threads.b. Each kind of spider makes a single type of thread.c. Engineers use it instead of steel for some purposes.3. In line 20, the word spin means ______. (vocabulary)a. useb. makec. have4. In line 27, the word them refers to ______. (inference)a. engineersb. natural websc. human-made materialsB Strategy: Identifying supporting ideas. Match each of the topics (1-3) with two of the supporting ideas (a-f).Topics1. Spiders can make different webs for different purposes.2. Spiders catch prey using their webs.3. Humans can learn a lot from spider webs.Supporting Ideasa. Spider silk is one of the strongest materials in the world.b. A spider can feel even the smallest movement of its web.c. Some webs look like flowers and confuse insects.d. Sticky webs catch insects.e. Engineers want to know why spider silk can take so many different shapes.f. Sometimes a web is for hiding, but other times it is for holding eggs.成果检验单选1.Those ______ have not got bikes may go by bus.A. whomB. whoC. 不填D. which2.Football is a game ______ is liked by most boys.A. whomB. whoC. 不填D. which3.Li Ming is the person ______ is most suitable for this task.A. whomB. whoC. 不填D. which4.The house ______ windows are broken is empty.A. whichB. whoseC. 不填D. who5.That is the day ______ I’ll never forget.A. 不填B. on whichC. in whichD. when课后作业用正确的关系代词填空，并用括号标出下列句子中的定语从句。
