1、定语从句精讲定语从句精讲1 适用学科英语适用年级高一适用区域通用课时时长（分钟）45分钟知识点定语从句的相关知识点教学目标掌握定语从句的用法教学重点定语从句的关系词的选择教学难点定语从句的运用 教学过程一、复习预习现在进行时的被动语态1.现在进行时被动语态的概念2.现在进行时被动语态用法 3.现在进行时被动语态应注意的几个地方二、知识讲解知识点1： 定语从句及相关术语 1.定语从句：定语从句是由关系代词或关系副词引导的从句，其作用是作定语修饰主句的某个名词性成分，相当于形容词，所以又称为形容词性从句，一般紧跟在它所修饰的先行词后面。2.关系词：引导定语从句的关联词称为关系词，关系词有关系代词和
2、关系副词。关系代词有that, which, who, whom, whose, as等；关系副词有where, when, why等。关系词常有3个作用：1，引导定语从句。2，代替先行词。3，在定语从句中担当一个成分。注：关系代词有主语.宾语之分。一般whom作为宾语。4.定语：定语用来限定、修饰名词或代词的，是对名词或代词起修饰、限定作用的词、短语或句子，汉语中常用的表示。主要由形容词担任。此外，名词，代词，数词，分词，副词，不定式以及介词短语也可以来担任，也可以由一个句子来担任单词作定语时通常放在它所修饰的词之前，作前置定语。短语和从句作定语时则放在所修饰的词之后，作后置定语。先行词：被
3、定语从句修饰的名词、代词称为先行词。 （一） 限定性定语从句一、关系代词（在句中作主语、宾语或定语）1. that既可代表事物也可代表人，which代表事物；它们在从句中作主语或宾语，that在从句中作宾语时常可省略关系词，which在从句中作宾语也可以省略。2而且，如果which在从句中作“不及物动词介词”的介词的宾语，注意介词不要丢掉，而且介词总是放在关系代词which的前边，但有的则放在它原来的位置 3. 代表物时多用which，但在带有下列词的句子中用that而不用which，这些词包括当先行词是anything, everything, nothing , none等不定代词时，或者
4、是由every, any, all, some, no, little, few, much等修饰时等，这时的that常被省略 还有先行词前有序数词或形容词最高级修饰时,或先行词就是序数词或最高级时.以及先行词中既有人又有物时.还有句中前面有which时,都只能用that4. who和whom引导的从句用来修饰人，分别作从句中的主语和宾语，whom作宾语时，要注意它可以作动词的宾语也可以作介词的宾语 5. whose是关系代词，修饰名词作定语，相当于所修饰成分的前置所有格.它引导的从句可以修饰人和物, 当它引导的从句修饰物体时, 可以与 of which 调换,表达的意思一样。 知识点2：关系
5、副词（在句中作状语）关系副词=介词+关系代词why=for whichwhere=in/ at/ on/ . which (介词同先行词搭配)when=during/ on/ in/ . which (介词同先行词搭配)1. where是关系副词，用来表示地点的定语从句。2. when引导定语从句表示时间注值得一提的是，表示时间“time一词的定语从句只用when引导，有时不用任何关系代词，当然也不用that引导。 By the time you arrive in London, we will have stayed there for two weeks. I still remembe
6、r the first time I met her. Each time he goes to business trip, he brings a lot of living necessities, such as towels, soap, toothbrush etc。3. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时，常用there is来引导There is somebody here who wants to speak to you. 这里
7、有人要和你说话。 （二）非限定性定语从句非限定性定语从句的作用是对所修饰的成分作进一步说明，通常是引导词和先行词之间用逗号隔开，将从句拿掉后其他部分仍可成立 1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分 2.当先行词是专有名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：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 ga
8、rden.我去年买的的那幢房子带着个漂亮的花园。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. 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
9、水变为蒸汽，这就叫做蒸发。4. 有时as也可用作关系代词5. 在非限定性定语从句中，不能用关系副词why和关系代词that，而用who, whom代表人，用which,whose代表事物.； 知识点3: 关系代词引导的定语从句1.who指人在从句中做主语(1) The boys who are playing football are from Class One. 在踢足球的男孩们是一班的.(2) Yesterday I helped an old man who lost his way. 昨天，我帮助了一个迷路的老人.2. whom指人，在定语从句中充当宾语，常可省略。（注：who和wh
10、om已无太大区别，可以通用。）(1) Mr. Liu is the person (whom) you talked with on the bus. 刘先生就是在公交车上和你聊天的那个人.(2) Mr. Ling is just the boy whom I want to see. 凌先生恰巧就是我想见的那个男孩.(3) The man who/whom you met just now is my friend. 你刚刚见到的那个人就是我的朋友.注意：关系代词whom在口语和非正式语体中常用who代替，可省略。如果在从句中做宾语,就用whom或who.比如: He is the man
11、whom/who I talk to. 他就是那个和我聊天的男人.如果是在从句中作主语就只能用who.比如: He is the man who has an English book. 他就是那个有英语书的男人.3.which指物，在定语从句中做主语或者宾语，做宾语时可省略(1) Football is a game which is liked by most boys. 足球是大多数男孩都喜欢的游戏.(2) This is the pen (which) he bought yesterday. 这是他昨天刚买的钢笔.4. that指人时，相当于who或者whom；指物时，相当于whic
12、h。在定语从句中做主语或者宾语，做宾语时可省略。(5) The number of the people that/who come to visit the city each year rises one million.(6) Where is the man that/whom I saw this morning?5. whose通常指人，也可指物，在定语从句中做定语(1) He has a friend whose father is a doctor.(2) I once lived in a house whose roof has fallen in.whose指物时，常用以
13、下结构来代替(3) The classroom whose door is broken will soon be repaired.(4) The classroom the door of which is broken will soon be repaired.(5) Do you like the book whose color is yellow?(6) Do you like the book the color of which is yellow? 知识点4: 注意介词+关系代词引导的定语从句关系代词在定语从句中做介词宾语时从句常由介词+关系代词引导(1) The scho
14、ol (that/which) he once studied in is very famous.(2) The school in which he once studied is very famous.(3) Tomorrow I will bring here a magazine (that/which) you asked for.(4) Tomorrow I will bring here a magazine for which you asked.(5) Well go to hear the famous singer (whom/that/who) we have of
15、ten talked about.(6) Well go to hear the famous singer about whom we have often talked.注意：1. 含有介词的动词短语一般不拆开使用，如：look for, look after, take care of等(1) This is the watch which/that I am looking for. (T正确)(2) This is the watch for which I am looking. (F错误)2. 若介词放在关系代词前，关系代词指人时用whom，不可用who或者that；指物时用wh
16、ich，不能用that；关系代词是所有格时用whose(1) The man with whom you talked is my friend. (T)(2) The man with that you talked is my friend. (F)(3) The plane in which we flew to Canada is very comfortable. (T)(4) The plane in that we flew in to Canada is very comfortable. (F)3. “介词+关系代词”前可有some, any, none, both, all
17、, neither, most, each, few等代词或者数词(1) He loved his parents deeply, both of whom are very kind to him.(2) In the basket there are quite many apples, some of which have gone bad.(3) There are forty students in our class in all, most of whom are from big cities.关系代词关系代词（一般情况下）that 可用who ,whom 和which在从句做
18、主语，谓动词的宾语，但是不能做介词的宾语which指物，在从句中作主语，谓语或宾语；who在从句中作主语；whom在从句中宾语；where在从句中修饰表地点的名词，做地点状语；when在从句中通常修饰表时间的名词，做时间状语；why在从句中做原因状语，先行词通常是reason有时why也可用for+which代替。知识点5: 关系副词引导的定语从句1. when指时间，在定语从句中做时间状语(1) I still remember the day when I first came to the school.(2) The time when we got together finally
19、came.2. where指地点，在定语从句中做地点状语(1) Shanghai is the city where I was born.(2) The house where I lived ten years ago has been pulled down.3. why指原因，在定语从句中做原因状语(1) Please tell me the reason why you missed the plane.(2) I dont know the reason why he looks unhappy today.注意：关系副词引导的从句可以由“介词+关系代词”引导的从句替换(1) Th
20、e reason why/ for which he refused the invitation is not clear,(2) From the year when/in which he was going to school he began to know what he wanted when he grew up.(3) Great changes have taken place in the city in which./where I was born. 三、例题精析【例题1】【题干】Ted came for the weekend wearing only some s
21、horts and a T-shirt, _ is a stupid thing to do in such weather. A. this B. that C. what D. which【答案】：D【解析】：分析句子结构可知，该句为定语从句，首先排除A和C；根据空前的逗号可知，该句为非限制性定语扶句，排除B。该从句应用which引导，which在从句中作主语，代指前丽的整个句子。【例题2】【题干】Mary was much kinder to Jack than she was to the others, _, of course, make all the others upset.
22、 A. who B. which C. what D. that【答案】：B【解析】：逗号后的非限定性定语从句中缺少主语，which引导非限制性定语从句，指代整个主句部分的内容。选择which。【例题3】【题干】Youll find taxis waiting at the bus station _ you can hire to reach your host family.A. which B. where C. when D. as 【答案】：A【解析】：先行词为the bus station，从句中谓语动词hire后差宾语，故用关系代词which。四、课堂运用【基础】1. The o
23、ld town has narrow streets and small houses _are built close to each other.A. they B. where C. what D. that2. She showed the visitors around the museum, the construction _had taken more than three years.A. for which B. with which C. of which D. to which3. Between the two parts of the concert is an i
24、nterval, _ the audience can buy ice-cream. A. when B. where C. that D. which【巩固】4. Whatever is left over may be put into the refrigerator, _ it will keep for two or three weeks.A. when B. which C. where D. while5. English is a language shared by several diverse cultures, each of _ uses it somewhat d
25、ifferently. A. which B. what C. them D. those6. A bank is the place _ they lend you an umbrella in fair weather and ask for it back when it begins to rain. A. when B. that C. where D. there【拔高】7. She has a gift for creating an atmosphere for her students _ allows them to communicate freely with each
26、 other.A. which B. where C. what D. who8. It was April 29,2001 Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.Athat Bwhen Csince Dbefore9. The school shop, _ customers are mainly students, is closed few the holidays. A. which B. whose C. when D. where答案及解析1. D【
27、解析】关系代词that代替先行词small houses，在从句中作主语。句意为：这座古老的城镇街道狭窄，小房子挨得很近。2.C 【解析】先行词为museum，在从句中充当定语，博物馆的建造工程花费了超过三年的时间。介词用of。选C。3. A 【解析】句意：音乐会的两大构成部分中间有幕间休息时间，在这段时间里观众可以去买冰激凌。When引导的定语从句修饰an interval，when在从句中作时间状语。首先解析句子结构，判断从句类型，题干说“在音乐会中间有间歇，此时你可以买冰激凌。”题干的前半部分完整无缺，后半部分补充说明这个间歇你可以干的事，所以这是一个非限定性定语从句，先行词为inter
28、val，非限定性定语从句的功能就是对先行词进行补充说明。由于从句部分不缺少主干成分，而且interval表时间，所以正确答案为A4. A【解析】句意为：剩下的任何东西都可以放入冰箱，在那里可以保存两三周。本题考查非限制性定语从句的关系副词。由句型结构可以看出，该题中的先行词refrigerator在从句中作介词的宾语，该介宾结构在定语从句中作地点状语，故选择关系副词where。when在从句中作时间状语；which在从句中作主语或宾语；while是连词，不能用于定语从句。5. A 【解析】本句中的先行词是several diverse cultures，先行词在从句中做each of的宾语，所
29、有应用关系代词which。6. C 【解析】本句中的先行词是the place.，先行词在定语从句中作地点状语，所以应该用关系副词where。7. A 【解析】分析句子成分可知，an atmosphere与修饰它的定语从句被for her students隔开，该从句缺少主语，所以用which。8. B 【解析】去掉It was及that后，April 29，2011不可以单独作时间状语，所以不是强调句型。用when引导定语从句修饰April29，2011。9. D 【解析】此处whose引导的非限制性定语从句修饰先行词shop，在定语从句中作customers的定语。句意为“这个学校商店，其
30、主顾大多是学生，因为放假就关门了。”课程小结1. 定语从句及相关术语 2. 关系副词（在句中作状语）3. 关系代词引导的定语从句4. 注意5. 关系副词引导的定语从句课后作业【基础】1. I walked up to the top of the hill with my friend, _ we enjoyed a splendid view of the lake.A. which B. where C. who D. that2.Julie was good at German, French and Russian , all of _ she spoke fluently. A. who B. whom C. which D. that3. Stephen Hawking believes that earth is unlikely to be the only planet life has developed gradually. A. that B. where C. which D. whose【巩固】
