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1、中考定语从句讲解定语从句请看下面的句子:Iwanttoknowtheboywhoisthetallest.句子做定语修饰boy(一)概念:定语从句:在复合句中修饰名词或代词的句子,叫定语从句。先行词:被定语从句修饰的词叫先行词。关系词:引导定语从句的词叫关系词。(二)定语从句的分类Ⅰ、限定性定语从句:从句不可少,没有它,先行词的意思不明确,主句也不完整。与先行词之间不用逗号。e.g:Thisisthebookthat/whichIwant.Ⅱ、非限定性定语从句:是对先行词的补充说明,没有它不会影响先行
2、词或主句意思的完整性。从句一般用逗号同主句分开。e.g:Mr.Green,whoiswatchingTV,ismyuncle.(三)(限定性)定语从句的结构Maryisagirlwhohaslonghair.先行词关系词定语从句关系代词关系副词which,who,whom,whose,thatwhere,when,why(四)定语从句的实质:二句合一(合并条件:人物先行在句一,又占句二一席地)Maryisagirl.合并为一个句子Shehaslonghair.定语从句四部曲:1、写:两句(主干+定语从
3、句)2、找:相同部分——先行词3、换:关系词(人or物)4、连:主句+从句Maryisagirl。Maryhaslonghair.——Maryisagirlwho/thathaslonghair.请把下列句子二句合一1.Ilikethebook.Thebookisonthedesk.2.Thisistheman.Themanhelpedme.3.Thedoctorisinthethatroom.Iamlookingforthedoctor.(五)定语从句关系词的确定:(先行词决定关系词)la.先行词
4、的分类lb.先行词在从句中充当的成分1.先行词做主语人:who/that物:which/that2.先行词做宾语人:who/whom/that物:which/that3.先行词做定语人:whose物:whose/ofwhich4.先行词做状语:when,where,whylwho/that作定语从句的主语或宾语.Themanwho/thatisspeakingatthemeetingisaworker.做题思路:先分解——分析——再合并分解Themanisaworker.Themanisspeakin
5、gatthemeeting.作主语lWhom/that作定语从句的宾语Thewoman(whom/that)theywantedtovisitisateacher.分解Thewomanisateacher.Theywantedtovisitthewoman.作宾语注意:关系代词作动词宾语时可省略.解题时,首先要结合选项对题干进行整体感知,确定定语从句的位置;根据定语从句中所缺少的句子成分,分析先行词逻辑上在定语从句中的成分,继而选出正确的选项。例如: Canyoutellmethenameofthe
6、factory________youvisitedlastweek? A.whatB.whereC./D.when 简析:本题定语从句的主语、谓语、时间状语已具备,而visit是个及物动词,从语义上分析,factory作visit的宾语。故只能选C(引导词在定语从句中作宾语时可以省略)。lwhose作定语从句的定语.Iknowthegirlwhosemotherisateacher.分解Iknowthegirl.Thegirl’smotherisateacher.作定语小结:关系词判断步骤l首先,
7、要辨别出先行词。如果先行词是指人,关系词可能就用who,thatwhom,whose。如果先行词指物,关系词可能用which或thatl然后,要确定关系词在从句中的成分。请看下表先行词主语宾语定语人who,thatwho(m),thatwhose物which,thatwhich,thatwhose,ofwhich巩固练习:用适当代关系词填空1.Ihaveafriend________likeslisteningtoclassicalmusic.2.YesterdayEmilywaswearingthe
8、newdress__________Igaveher.3.Theman______legbrokeinamatchusedtobeafootballplayer.(六)只能用that,不能用which的情况:(1)先行词为all,everything,anything,nothing,something,nothing,few,little,much,theone等不定代词时;(2)先行词被形容词最高级所修饰或被theonly,thevery,the