1、专题七定语从句考点一关系代词引导的定语从句1who，whom，whose引导的定语从句(1)who或whom均可指代人，但who在从句中作主语或宾语，whom在从句中作宾语；两者在引导限制性定语从句时常可用that替换。作主语时，who/that不可省略；作宾语时，whom/who/that可以省略。Ive become good friends with several of the students in my school who/whom/that I met in the English speech contest last year.我与好几位去年在英语演讲比赛中结识的同校同学成
2、了好朋友。I have many friends to whom Im going to send post cards.我有很多我打算给寄贺卡的朋友。(2)whose表所属关系，一般指人，也可指物，在从句中作定语。指物时相当于of which；指人时相当于of whom。(2016全国甲卷)I had an unexpected teaching assistant in class whose creativity would infect other students.我在班上有一位意想不到的助教，他的创造性经常感染其他的学生。2that，which引导的定语从句(1)which指物，在
3、从句中可以作主语、宾语，也可作定语，作宾语时可以省略。that指人或物均可，在从句中可以作主语、宾语、表语，作宾语时可以省略。She showed the visitors around the museum that/which had been constructed three years before.她带着这些游客参观了那座三年前建造的博物馆。(2016天津高考)Every day I practiced reading and writing，which I used to avoid as much as possible.每天我都练习过去尽量避免去做的阅读和写作。(2)限制性定
4、语从句中，关系代词只用that不用which的情况：先行词为不定代词anything，nothing，something，everything，all，some，none，little，few，the one等时。I refuse to accept the blame for something that was someone elses fault.我拒绝接受因别人的错误而对我进行的指责。先行词是形容词最高级或序数词，或先行词前有形容词最高级或序数词修饰时。The first place that they visited in Guilin was Elephant Trunk Hil
5、l.他们在桂林参观的第一个地方是象鼻山。先行词被the only，the very，the last，the same，any，every，each，few，little，no，some，all等修饰时。The only part of the meal that I really liked was the dessert.这顿饭只有甜点是我真正爱吃的。先行词中既有表示人又有表示物的名词时。They will never forget the things and persons that theyve seen or heard of during their long journey.他
6、们将永远不会忘记在他们的长途旅行中见到或听说过的人和事。(3)关系代词只用which而不用that的情况：关系词引导非限制性定语从句时。The boy was away from home for a week，which worried his parents very much.这个男孩离家一个星期了，这使他父母很担心。关系代词前有介词时。We live in an age in which more information is available with greater ease than ever before.我们生活在一个信息比以前更容易获得的时代。3as引导的定语从句(1)a
7、s可以引导限制性定语从句，常用于“so/such/the same先行词as.”结构中。Such machines as are used in our workshop are made in China.像在我们车间使用的机器是中国制造的。易错警示which引导定语从句代指前面整句话的内容时只能位于主句之后。He kept lying to me，which annoyed me greatly.他总是对我说谎，这事使我很恼火。(2)as也可以引导非限制性定语从句，定语从句说明整个句子，可放在主句之前、之中或之后。常用的这种类似插入语的句式有：as the saying goes，as i
8、s said above，as is mentioned above，as often happens，as is often the case，as is reported in the newspaper等。“You cant judge a book by its cover，”as the old saying goes.正如老话所说的那样：“人不可貌相。”考点二关系副词引导的定语从句 1where引导的定语从句where表示地点，在定语从句中作地点状语，相当于“介词in/at/on.which”。(2016天津高考)I went to a special school where I
9、 got plenty of extra help.我去了一所特殊学校，在那里我得到了足够的额外帮助。易错警示当先行词为situation，case，stage，point，activity，atmosphere等抽象名词，且引导词在定语从句中表示事情发生的情况、阶段等时，常用关系副词where引导。You reach a point where medicine cant help.你到了药物无法治疗的地步。2when引导的定语从句when表示时间，在定语从句中作时间状语，相当于“介词in/at/on/during.which”结构。(2016天津高考)We will put off the
10、 picnic in the park until next week，when the weather may be better.我们将把公园的野餐推迟到下个星期，那时天气可能会更好。3why引导的定语从句why表示原因，在定语从句中作原因状语，相当于“介词forwhich”结构。Do you know the reason why/for which he didnt attend the meeting?你知道他没参加会议的原因吗？名师点津非限制性定语从句中，用for which表示原因而不用why。I had told them the reason，for which I didn
11、t attend the meeting.我把理由告诉了他们，为此我没有去开会。考点三介词关系代词引导的定语从句1介词和关系代词的确定若介词放在关系代词之前，关系代词指人时常用whom，指物时常用which。另外，whose也可以放在介词后，即“介词whose名词”结构。一般来说，确定关系代词前的介词，可以从以下三方面入手：(1)先行词的意义；(2)从句中的动词或形容词与先行词的固定搭配；(3)句子的意思。Trading leather shoes is the business to which the Greens are devoted.皮鞋生意是格林一家所致力于的事业。(be devo
12、ted to“献身，致力于”)I wish to thank Professor Smith，without whose help I would never have gone this far.我希望感谢史密斯教授，没有他的帮助，我永远不会走这么远。Recently I bought an ancient vase，whose price(the price of which)was very reasonable.最近我买了个古代的花瓶，它的价钱很合理。2“of关系代词”引导的定语从句在some，any，few，little，none，all，both，neither，many，most
13、，each等代词或数词的前、后表示整体与部分的关系可以用of which/whom。John invited about 40 people to his wedding，most of whom are family members.约翰邀请了大约40人参加他的婚礼，他们当中绝大部分是家庭成员。3“介词where”引导的定语从句有时“介词where”可以引导定语从句，此时要和“介词which”引导的定语从句从意思上加以区别。His head soon appeared out of the window，from where he saw nothing but trees.他的头很快从窗口
14、探了出来，从那里除了树木他什么也看不到。(from where相当于from out of the window，而不是from the window).单句语法填空1(2017江西红色七校一联)There，lying in the muddy river bed was a little dog about two months old， front legs were tightly tied with ropes.whose句意：那里，在泥泞的河床里躺着一只大约两个月的小狗，它的前腿被绳子紧紧地拴在一起。先行词为a little dog，将先行词代入定语从句后为：The little d
15、ogs front legs were tightly tied with ropes.由此可见在定语从句中front legs缺少定语，故用whose引导。2(2017汕头二模)Sierra Leone is a country basic health facilities are lacking and many people are struggling with poverty.where句意：塞拉利昂是一个基础医疗设备短缺、很多人都在与贫困做斗争的国家。先行词为a country，关系副词在定语从句中作地点状语，故答案为where。3(2017赣州二模)We have a livi
16、ng room，two bedrooms with wonderful balconies and a kitchen， my mom always cooks great delicious food.where句意：我们有一间起居室，两间有漂亮阳台的卧室，还有一间厨房，在那里我妈妈总是做出非常美味的食物。先行词为a kitchen，关系副词在定语从句中作状语，故用where引导。4(2017青岛一模)On looking at the spot the bird had risen，I saw two eggs.where句意：我刚向那只鸟儿飞起来的地方看去，便发现了两枚鸟蛋。先行词为th
17、e spot，关系副词在定语从句中作地点状语，故答案为where。5(2017烟台质检)The heartwarming story began in September last year a woman asked the primary school in her neighborhood to accept her sixyearold son.when句意：那个温馨的故事发生在去年的九月，当时，一位女士请求她所在社区的小学接受她6岁的儿子。关系副词在定语从句中作时间状语，故用when引导。6(2017青岛质检)Some of the teachers at the college a
18、sked Dr.Naismith to invent a game can be played indoors.that/which句意：那所大学的一些教师请奈史密斯博士发明一种可以在室内玩的游戏。先行词为a game，关系代词在定语从句中作主语，且指“物”，故用that或which引导。7(2017皖北协作区联考)If the earth is poisoned，the water，the food and the animals will be poisoned， means that we who poison the earth will be poisoned too.which句意
19、：如果土地被污染了，水、食物和动物就会被污染，这意味着将土地污染了的我们也将被污染。先行词为设空处前的内容，关系代词在定语从句中作主语，故用which引导非限制性定语从句。8(2017温州返校联考)Those motorcycles， a huge umbrella is fixed，are a huge threat to people walking in the street.where句意：那些摩托车车身上都装了一把大伞，这对于街上的行人是一个巨大的威胁。先行词为those motorcycles，关系副词在定语从句中作地点状语，故用where引导。9(2017渭南一模)Im sorr
20、y not to have replied to your letter earlier，for ，I must say，I apologize.which句意：很抱歉没能早点给你回信，对此我必须道歉。考查定语从句。从句中I must say为插入语，可忽略不计。定语从句的先行词为前面的“not to have replied to your letter earlier”这件事，代入定语从句后为：I apologize for it.由此可见关系代词在定语从句中作介词for的宾语，故答案为which。 【导学号：60312252】10(2017怀化一模)Almost every teenag
21、er will experience a period in their life they arent content with their parents.when句意：几乎每个青少年都会经历一段对父母不满的时期。考查定语从句。先行词为a period，将先行词代入从句后为：They arent content with their parents in the period.由此可见，关系副词在定语从句中作时间状语，故答案为when。.单句改错1Toms mother kept telling him that he should work hard，that didnt work. t
22、hatwhich句意：Tom的母亲不断地告诉他应该认真学习，这没有起任何作用。此处是which引导非限制性定语从句，指代前面整个句子，不能用that。2This is the factory where I visited last week. wherethat/which或去掉where句意：这是我上周参观过的工厂。分析本句结构可以看出，句中含有一个定语从句。关系词在从句中作宾语，且指物，应用关系代词that或which引导定语从句，关系代词也可省略。因此把where改为that/which，或者去掉where。3I can recognize the book.That is the s
23、ame English book as he borrows from the school library. asthat句意：我能认出那本书，那就是他从学校图书馆借来的那本英语书(指同一本书)。此处应用关系代词that引导限制性定语从句，修饰先行词“English book”。4The problem about that I consulted you has now been solved. thatwhich句意：我向你请教的那个问题现在已经解决了。此处是“介词which”引导的定语从句。介词后只能用which(指物)和whom(指人)，不能用that和who，但当介词放在后面时，在限制性定语从句中，可用that代替which/whom，并且that可省略。在非限制性定语从句中只能用关系代词which/whom。5We will start at the point which we left off last time. whichwhere句意：我们将从上次停下来的地方开始。分析句子的结构可知，句中包含一个定语从句，先行词point表示抽象的地点，故把which改为where。
