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时间:2020-03-09
《新机电英语 教学课件 作者 田方Unit 7-2.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、UnitSevenElectricalandElectronicTechnologyTask4Grammar:AttributeClauses定语从句在复合句中,修饰某一名词或代词,用作定语的从句叫做定语从句(attributiveclause)。被定语从句所修饰的词叫做先行词(antecedent)。定语从句必须放在先行词之后。引导定语从句的词叫关联词。关联词有关系代词who、whom、whose、which、that和关系副词when、where、why等。Task4GrammarThecouplewholivenext
2、tousareprofessorsinauniversity.IstillrememberthedaywhenIfirstcametoBeijing.Heisthemanwhom/thatIsawyesterday.Themanwhomyouspoketojustnowisourchiefengineer.Task4Grammar关系代词1、who,whom的用法who和whom指人,who在定语从句中作主语;whom在定语从句中作宾语,在限制性定语从句中可省略。在口语中可用who代替whom。Wehaveafriendwh
3、oplayspianoverywell.(作主语)That’stheman(whom/who)ImetatAllison’sparty.(whom作宾语能省略)Task4Grammar2、whose的用法whose指人或物,在定语从句中作定语,指物时常可用ofwhich取代。Ihaveafriendwhosefatherisamayor.(指人,作定语)Weworkedinarun-downworkshopwhosewindowfacessouth.(指物,作定语)Task4Grammar3、which的用法which指物,
4、在定语从句中作主语和宾语,作宾语时,在限制性定语从句中可省略。Thebuildingforsalewasthehousewhichhadaslateroofandwasbythestream.(作主语,不能省略)Itisusedforrecordingthetools(which)wehavereplaced.(作宾语,可以省略)Task4Grammar4、that的用法that多指物,有时也指人,在定语从句中作主语或宾语,指物时其用法和which大致相同,但也有区别。AllthepeoplethatcomefromGerm
5、anyworkmuchharder.(that指人,在从句中作主语,不能省略)Wewenttoacompany(that)Janehadrecommendedtous.(that指物,在从句中作宾语,常省略)Andrewstoppedthepolicecarthatwasdrivingpast.(that指物,在从句中作主语,不能省略)Sheistheonlyperson(that)Icantrust.(that指人,在从句中作宾语,可以省略)Task4Grammar关系副词的用法1、when的用法when指时间,修饰表时间
6、的先行词,在定语从何中作时间状语。DoyourememberoneafternoontenyearsagowhenIcametoyourplantandborrowedalathe?2、where的用法where指地点,修饰表地点的先行词,在定语从句中作地点状语。AfterlivinginParisforfiftyyearshereturnedtothesmalltownwherehegrewupasachild.Task4Grammar注意:先行词为表示时间、地点的名词时,关系词不一定都用when或where。如果关系词在
7、定语从句中作主语或宾语,就要用关系代词which或that。Thisisthefactorythat/whichwevisitedlastyear.(在从句中作宾语)Iwon’tforgetthetimethatwespentinthecountryside.(在从句中作宾语)Task4Grammar3、why的用法why指原因,修饰名词reason,在定语从句中作原因状语。Doyouknowthereasonwhyhegaveuptheorder?Task4GrammarExercisesIdentifytherelati
8、veclausesandtherelativepronounsorrelativeadverbs:(1)ThisisthemostimpressiveTVprogramthathasneverbeenputonshowbefore.(2)Thosewhoareintheirfortiesa
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