英语定语从句

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1、定语从句先行词“theman”被修饰的对象总是在定语从句的前面关系词“who”把两个句子变得有关系的词（引导定语从句）who,whom,which,thatwhere,when,why（reason）whose（作定语，与名词连用，表所属）as,than,but,whereby先行词一个名词一个代词一个短语一个句子（完整句或分句）先行词不明确会影响阅读理解和翻译先行词Helaughsbestwholaughslast先行词被隔开先行词Itcanbepredicted,however,thatfromtimetotimequestionswil

2、larisewhichwillrequirespecificscientificanswers.Sth.（主从questions(定从)willarise.）canbepredicted.先行词Meanwhile,thetheftofinformationaboutsome40millioncredit-cardaccountsinAmerica,disclosedonJune17th,overshadowedahugelyimportantdecisionadayearlierbyAmerica’sFederalTradeCommissio

3、n(FTC)thatputscorporateAmericaonnoticethatregulatorswillactiffirmsfailtoprovideadequatedatasecurity.先行词TheyhavebeenspurredinpartbyDNAevidencemadeavailablein1998whichalmostcertainlyprovedThomasJeffersonhadfatheredatleastonechildwithhisslaveSallyHemings.先行词先行词被隔开1.先行词+谓+定语从句2

4、.先行词+其它定语+定语从句3.先行词+状语+定语从句关系词总则：“十字交叉”关系词（which指物,that指人/物）只能用that的情况1.先行词是不定代词或是由其构成的复合词（some，all，little，something，nothing）2.先行词被all，any，every，some，little，much，no修饰时3.先行词被最高级，序数词，only修饰时4.先行词中既包括人又包括物时只能用which的情况1.介词+which2.非限定性定语从句，逗号+whichHumanshavetheabilitytomodifythe

5、environmentinwhichtheylive.关系词（whose）作定语，与名词连用，表所属关系；先行词可以是人/物Itisalmostimpossibletofindtwopersons------appearancearethesame.Thesechildrensitinaschoolroom------windowsareallbroken.whosewhosewhere关系词（as，than，but，whereby）as引导限定性定语从句，用在固定的结构当中such…as,thesame…as,so…asHeisnotthe

6、sameboyasweknew.as引导非限定性定语从句可以位于句首，相当于whichthanMorefamiliesconsistofoneparenthouseholdsortwoworkingparents;consequently,childrenarelikelytohavelesssupervisionathome----------wascommoninthetraditionalfamilystructure.AthanBthatCwhichDasthanthan在从句子作主语或者是宾语than可以指人/物than前面的主句必

7、须要有比较级比较级所修饰的名词就是先行词butThereisnomotherbutlovesherchildren..but可以指人/物But作主语或者宾语定语从句形式上肯定，意义上否定通常与具有否定意义的主句连用通常只引导限定性定语从句限定性定语从句和非限定性定语从句的区别限定性翻译成。。。的非限定性翻译成单独的分句定语从句和同位语从句的区别Thefactthatwetalkedaboutisveryimportant.Thefactthathesucceededintheexperimentpleasedeverybody.