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1、定语从句讲解和练习一、概念:Heistheboywhooftengoestoschoollate.先行词关系词定语从句二、原则：a.定语从句必须紧紧地跟在先行词后面，限制修饰先行词。b.定语从句必须用关系词来引导。c.关系词在定语从句中作一个句子成分.三、扩大.SheistheoldwomanwhomIsawthismorning.MaryisthegirlwhoseparentsworkinJapan.Isthisthekeywhichyouarelookingfor?October1,1949is
2、thedaywhenNewChinawasfounded.Thisisthehousewherethegreatmanwasborn.Idon’tknowthereasonwhyshelooksunhappytoday.四、下列定语从句只能用that来引导：1.先行词为形容词最高级所修饰ThisisthelongestbridgethatIhaveeverseen.2.先行词为序数词所修饰Ihappenedtobethethousandthguestthatvisitedthegreathotel.T
3、hisisthefirstcompositionthathehaseverwritteninEnglish.3.先行词既包括人又包括物Theytalkedofthingsandpersonsthathappenedintheschool.Hetalkedabouttheteachersandschoolsthathehadvisited.4.主句是who或which开头的特殊疑问句中的定语从句Whoisthemanthatcamethismorning?Whichisthebagthatyoulost
4、?5.先行词为theonly,thevery,thelast,thesame所修饰的定语从句Heistheverypersonthatthepolicearelookingfor.ThisistheonlythingthatIcanremember.6.先行词是everything,nothing,something,all,little,much,everybody等不定代词Telluseverythingthatyouknow,please.Isthereanythingthatyoudon’tu
5、nderstand?7.先行词被all,every,no,some,any,little,much修饰时Allthatglittersisnotgold.I’vereadallthebooksthatyougaveme.五、“介词+关系词”及关系副词when,where,why1).Theboxisfullofbottles.Heisstandingonthebox.---->Theboxonwhichheisstandingisfullofbottles.Theboxwhereheisstandin
6、gisfullofbottles.2).Thisisthetrain.Weworkonthetrain.---->Thisisthetrainonwhichwework.Thisisthetrainwherewework.3).Iknowthereason.Shediditforthereason.---->Iknowthereasonforwhichshedidit.Iknowthereasonwhyshedidit.4).Themanisourschoolmaster.Youshookhandsw
7、iththemanjustnow.---->Themanwithwhomyoushookhandsisourschoolmaster.5).ThepenismadeinShanghai.Sheiswritingwiththepen.---->ThepenwithwhichsheiswritingismadeinShanghai.不能拆开的词组：lookfor/lookafter/catchholdof/takecareof/puton/takeoff…….六、非限制性定语从句只对先行词起补充，说明的作
8、用，常用逗号分开。关系代词用who(m),which，关系副词用where,when.非限制性定语从句不能用that来引导.ThiswastheAmericanCivilWar,whichlasted4yearsbeforetheNorthwonintheend.Hewastakentoanotherroom,wherehefoundawoundedboy,whowasdying.七、as作为关系代词，习惯上用于下列词组：thesame....assuc
