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高中英语语法总结大全之定语从句定语从句定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。
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等。
关系副词有：when, where, why等。
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，在从句中所起作用如下：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）, 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 (of which) cover is green.请递给我那本绿皮的书。
3）which, that它们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。
高考语法定语从句精讲一个句子充当了定语，那么这个句子就叫定语从句。
可以充当定语的1 adj. a beautiful girl2 n. An apple tree 3介词短语a girl in red.4 非谓语doing 表主动，表进行done 表被动，表完成to do 表目的，表将来非谓语作前置定语 a falling leaf 一片正在飘落的叶子A fallen leaf 一片已经飘落的叶子非谓语作后置定语 a girl speaking french.A film called TatanicThe meeting to be held in 3 hours is very important.定语从句：he is a man who comes from England.先行词关系词从句关系词：关系代词: which that who whom as whose关系副词:when where why的三个步骤1先确定定语从句部分2 找先行词3 把先行词带入定语从句中，看其在定语从句中充当什么成分，然后在根据具体情况填入关系词。
详解一、当先行词是人时且先行词在定语从句中作主语时，用who/ that且先行词在定语从句中作宾语时, whom/that/不填/who且先行词在定语从句中作定语时，用whoseEg she is a girl _________ speaks french.I give an apple to her ________everyone likes very much.We all like the girl _______ french speaks very well.二当先行词是物时且先行词在定语从句中作主语时，用which/ that且先行词在定语从句中作宾语时，用which/that/不填且先行词在定语从句中作定语时，用whose.Eg. I can’t find my pen_________ is my favorite.I like the cake _________ my mother made this morning.I like the room _______ windows face south.三关系副词when / where/ why = 介词+ which（在定语从句中作状语）（at 10 o’clock, in the room, for this reason, in this way）时间I won’t forget the days _______ we studied together.I won’t forget the day_______ we spent together.地点I visited the factory ________ my father worked ten years ago. My father works in a factory _______ i visited last week.原因I don’t accept the reason _______ he give me.This is the reason _______ he is late for school.This is the reason _______ I don’t accept.This is the reason _______ is unreasonable.(不合理的)四介词+ 关系词先行词是人，介词+whom,先行词是物，介词+which附:介词后面不能用that逗号后面不能用that介词后面不能用whoEg物I bought three books, two of _____ are story booksI bought three books, and two of _____ are story books.A whichB themC thatD 不填人Here comes five girls, two of ______ are my friendsHere comes five girls, and two of _____ are my friendsinA whomB WhoC themD which五先行词是物时，只能用that的情况（不能用which）1 当先行词是all, little, much, more,everything, anything, nothing等不定代词时EgTom told his mother all _____ had happened.2 当先行词本身是序数词，形容词最高级或者先行词等这些词修饰时This is the best book _____ I have ever read3 当先行词被the only, the very, the last, only, all, any ,no修饰时This is the only book ____ i can findI want to read all the books ____ were written by mary.4当先行词既是人又是物时I often meet tom and his dog _____look friendly to each other.5当主句是以which /Who 开头的特殊疑问句时，为了避免重复，必须用thatWhich is the hotel ____ you like best?六 定语从句中几个特殊的词1 way 方式，方法 I don ’t like the way ___ is violent. I don ’t like the way _____ he tells me I don ’t like the way ______ he speaks to me.2 当先行词是表示抽象的模糊性的地点时， 关系词一般情况下用where/介词+ which, 特殊情况下具体问题具体分析。
备战2018届高考英语（通用版）一轮复习定语从句试题及答案备战to-be to enter that you lost your wallet?A /B whereC thatD when【解析】在考查定语从句的时候利用疑问句的特殊结构干扰学生的正确选择比较常见。
遇到这类定语从句时，最好的办法是先把疑问句还原成陈述句，然后判断谁是先行词，再看关系词在定语从句中所充当的成分，最后确定正确答案。
在这个定语从句中的先行词是room, that在定语从句里做主语。
【答案】C9Obama, _______ life was once hard when he was young, were elected President of AmericanA for whomB whoC to whomD /【解析】这是一个非限制性定语从句，还考查到了“介词+关系代词”引导的定语从句。
根据句子意思需选择介词for, 从而构成be hard for Obama for的宾语是指人，这时就只能用whom。
【答案】A10 _______ has been announced, our government will take more measures to make the falling economics recover as soon as possibleA ThatB AsC ItD What【解析】这是一句非限制性定语从句，关系代词指代整个句子we shall have our final exams next month，且位于句首，因此选择as。
在定语从句中都可以作主语和宾语。
但注意as 引导的定语从句可置于句首，而which不可。
【答案】B11 Lee Yu chun was titled as the top thin beauty in Ansia , _______ caused a lot of disagreements in the field of entertainment。
2018全国高考汇编之定语从句一（2018安徽卷）22．The exact year Angela and her family spent together in China was 2018A. WhenB. whereC. whyD. which【考点】考察定语从句【答案】D【举一反三】Between the two parts of the concert is an interval, _______ the audience can buy ice-cream.A. whenB. whereC. thatD. which【答案】A二（2018北京卷）26. I borrow the book Sherlock Holmes from the library last week, ______ my classmates recommended to me..A.whoB. whichC. whenD. Where【考点】考察定语从句【答案】B【举一反三】The Science Museum, we visited during a recent trip to Britain, is one of London’s tourist attractions.A.whichB.whatC.thatD.where〖答案〗A〖考点〗考查非限制性定语从句三（2018福建卷）31. Students should involve themselves in community activities they can gain experience for growth.A. whoB. whenC. whichD. where【考点】考察定语从句【答案】D【举一反三】Those successful deaf dancers think that dancing is an activitysight matters more than hearing.A.whenB.whoseC.whichD.where 〖答案〗D四（2018湖南卷）31.I am looking forward to the day my daughter can read this book and know my feelings for her.A. asB. whyC. whenD. where【考点】考察定语从句【答案】C【举一反三】Between the two parts of the concert is an interval, _______ the audience can buy ice-cream.A. whenB. whereC. thatD. which【答案】A【考点】考查定语从句。
