定语从句高考考点例析在句子中作定语，修饰名词或代词的从句。这种从句由关系代词或关系副词引导，并作句子成分。定语从句也叫形容词性从句。why(原因状语)Attributiveclause:Themanwhocamehereyesterdaycameagain.引导非限制性定语从句的关系代词不可用that，指人时用who(主语),whom(宾语)，指物时须用which考点一:如何判定用关系代词还是用关系副词Wewillgotothemountain____(wegrewtreeslastyear).2、如定语从句中缺宾语，确定定语从句的谓语动词是及物动词，用关系代词，如不是，用关系副词。Yesterdaywewenttovisitthehouse______(thegreatwriterusedtolive).3、如定语从句中谓语结构是被动结构，有主语，则用关系副词。无主语，用关系代词Kunmingisabeautifulplace______(flowersareseenalltheyearround).考点二：that和which的选择I’vereadallthebooks(that)yougaveme.考点二：that和which的选择④先行词被theonly,thevery,thelast修饰时。⑥先行词是疑问词who,which,what时，定语从句用that而不用who,(whom)和which引导,避免重复。⑦当关系代词在从句中作表语时：Which可以引导非限定性定语从句，可用于介词后，其先行词可是一个词,也可是整个主句或主句的某一部分。考点三：as与which引导的定语从句3.用于thesame…as…,such…as…，as…as…,so…as…中，e.g.Suchbooksasyoutellmeareinteresting.ThisisthesamebookasIlentyouyesterday.Heagreedtotheplan,aswastobeexpected.考点四：关系代词前介词的确定4.非限制性定与从句中，要表示先行词的一部分时，可用“数词/代词+of+关系代词”的结构，如：e.g.Thereare50studentsinourclass,two-thirdsofwhomhavebeentoBeijing.Theylivedinahouse,ofwhichthedooropenstothesouth.Theylivedinahouse,thedoorofwhichopentothesouth.关系副词when,where,why可以用适当的介词+which来替代。如：when=in/on/at…+which,where=in/on/at…+which,why=for+which介词的位置非常灵活，有时放在关系代词之前，有时放在动词之后。eg.1.Iwon’tforgetthedatewhen(onwhich)Iwasborn.3.Idon’tknowthereasonwhy(forwhich)hehaven’tcometoday.4.Tomstillremembersthedayswhen(inwhich)theylivedinTianjin..Correctthesentences:5.Einsteinissuchagreatscientistthatwemustlearnfrom.6.Thestudentwho’sbookIhadborroweddidn’tcometoschooltoday..练习题2、Isthisfactory____wevisitedlastweek.3、Shewillneverforgettheday_____shespentinBeijing.4、Thisistheschool___heworked20yearsago.5、Thisistheveryfactory_______wevisitedlastyear.6、Thetextisoneofthemostinterestingstories_______learntinthepastthreedays.7、Thecollegewon’ttakeanyone_____eyesightisweak.8、Letmethinkofapropersituation_______thissentencecanbeused.9、Those_____totakepartinthegamewritedownyournames.10、I，______yougoodfriend,willtrymybesttohelpyouout.習慣篇“Doctor,”shesa