高一英语必修一定语从句总结

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1、定语从句一、三个概念1.定语从句：用来修饰某个名词、代词或整个句子的从句就叫做定语从句。2.先行词：定语从句所修饰的词就叫做先行词，它一般是由名词、代词或句子充当。3.关系词：引导定语从句的词就叫做关系词。关系词用以连接先行词与定语从句，关系词既有替代先行词的作用，又在从句中充当着一个成分。例：Theboywhoissingingatthestageisonlynineyearsold.先行词关系词定语从句Anyonethatiswillingtohelpothersiswelcometoourgroup.先行词定语从句关系词二、要点1.先行

2、词与定语从句之间要有关系词（有时可省略）2.关系代词应紧跟在先行词之后3.关系词在定语从句中充当某一成分三、关系词的用法关系代词:who/whom/that/which/whose1.先行词是人时，关系代词用who/whom/that.(1)who/that表主格:Thegirlwho/thatisdrawingisJim’ssister.Themanwho/thatlivesnextdoorisfriendly.(2)whom/that表宾格(who可用于口语中)可省略:Theboy(whom/that)wetalkedaboutwillc

3、ome.Heistheman(whom/that)wesawyesterday.2.先行词为物时，关系代词用which/that.(1)which/that表主格:Aplaneisamachinewhich/thatcanfly.Marylikesmusicwhich/thatisquietandgentle.(2)which/that表宾格,可省略:Thecar(which/that)heboughtwasasecond-handone.Thefilm(which/that)wesawlastnightwaswonderful.3.whos

4、e：表所有格，先行词既可以是人，也可以是物Theworkerwhosearmwasbrokenwassenttohospital.Theriverwhosebanksarecoveredwithtreesisverylong.关系副词：when/where/why关系副词可替代的先行词是时间、地点或理由的名词，在从句中作状语关系副词=介词+关系代词why=forwhichwhere=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.when:指时间，其先行词表示时

5、间，在句中作时间状语。例：Thiswasthetimewhenhearrived.IwillneverforgetthedaywhenImetmyfavoritestar.2.where指地点，其先行词表示地点，在句中作地点状语。例：Thisisthefactorywhereheworks.NanjingistheplacewhereIwasborn.3.why指原因，其先行词是原因，起原因状语作用。例：Nobodyknowsthereasonwhyheisoftenlateforschool.Isthisthereasonwhyherefu

6、sedouroffer?注意：关系副词when,where,why,的含义相当于“介词+which”结构，因此常常和“介词+which“结构交替使用。例：IwillneverforgetthedayonwhichImetmyfavoritestar.【when】NanjingistheplaceinwhichIwasborn.【where】Isthisthereasonforwhichherefusedouroffer?【why】四、关系代词that的特殊用法只用that的情况1.先行词被序数词或形容词最高级所修饰，或本身是序数词、基数词、形

7、容词最高级时，只能用that，而不用which.例如：Hewasthefirstpersonthatpassedtheexam.2.被修饰的先行词为all,any,much,many,everything,anything，none，theone等不定代词时，只能用that，而不用which.例如：Isthereanythingthatyouwanttobuyintheshop？3.先行词被theonly，thevery，thesame，thelast，little，few等词修饰时，只能用that，而不用which.例如：Thisisthe

8、samebikethatIlost.4.先行词里同时含有人或物时，只能用that，而不用which.例如：Icanrememberwellthepersonsand