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1、CulturalrelicsUnit1DiscoveringusefulstructuresGrammarTheRestrictiveandNon-restrictiveAttributiveClauseRevisionWhatdoesanattributiveclausedo?相当于形容词；提供人或事物更详细的信息；Whatdoesanattributiveclauselooklike?由关系代词或关系副词等引导；也可以用“介词+关系代词”引导。Wheredoesanattributiveclauseco
2、meinasentence?在所修饰的先行词之后。Comparethefollowingpairsofsentencesandfindthedifferencesbetweenthem.1.Thisdictionary(that)myfatherboughtinAmericahasbeenhighlyrecommendedbyourteacher.Thisdictionary,whichmyfatherboughtinAmericahasbeenhighlyrecommendedbyourteacher.2
3、.Hetoldmesomethingthathappenedlastnight.Hetoldmesomethingboring,whichmademeangry.限制性定语从句和非限制性定语从句限制性定语从句非限制性定语从句形式上不用逗号和主句隔开用逗号和主句隔开意义上是先行词不可缺少的定语，不能删除是对先行词的补充说明，删除后意思仍完整译法上翻译成先行词的定语，“…的…”通常翻译成主句的并列句关系词的使用上A.做宾语时可省略B.可用thatC.可用who代替whom不可省B.不用thatC.不用who代替
4、whom1.非限制性定语从句能将整个主句作为先行词,对其进行修饰,这时从句谓语动词要用第三人称单数。例如：HeseemsnottohavegraspedwhatImeant,whichgreatlyupsetsme.他似乎没抓住我的意思，这使我心烦。Liquidwaterchangestovapor['veɪpə]蒸汽,whichiscalledevaporation[ɪˌvæpə'reɪʃn].液态水变为蒸汽，这就叫做蒸发。注意的问题2.which和as引导非限制性定语从句时的区别1、语义的区别as表示“
5、正如”；Hemadealongspeech,asweexpected. Which表示“这一点”，Hemadealongspeech,whichwasunexpected. Someoftheroadswereflooded,_________madeourjourneymoredifficult．2、位置的区别as可以放在句首，句中；which则只能放在句中。Asiswellknown，Shanghaiisabigcity．which总结一、定语从句的定义：用来修饰名词或代词的从句叫__________。
6、被定语从句所修饰的名词或代词叫_______。定语从句一般是由__________或_________来引导的。相当于名词和形容词的作用。eg:1.DoyouknowthemanwhocametoseeXiaoYangthismorning?2.ThedayisnotfaroffwhenwewillmakeatriptoBritain.定语从句归纳总结定语从句先行词关系代词关系副词二、关系代词和关系副词的作用：1、引导作用2、替代作用3、在定语从句中担当某个_________的作用eg:1.Thosewho
7、wanttogopleasesignyournameshere.2.Thisisthehousewherehewasborn.3.Bill,whowashereyesterday,askedmealotofquestions.句子成分三、关系代词（who,whom,which,that,whose）的指代关系指人指物在定语从句中的作用WhoWhomWhichthatwhose√√√√√√√主语宾语宾语主语宾语主语宾语定语四、关系代词which和that的区别：A.关系代词必须用that的情形：1、当先行词被
8、形容词的最高级所修饰ThisisthebestfilmthatIhaveeverseen.2、当先行词被序数词修饰ThefirstcarthatarrivedatthedestinationwasdrivenbyJohn.3、当先行词被theonly,thevery等修饰ThisistheonlyticketthatIgotyesterday.ThisistheverybookthatI’mlookingfor.
