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1、Keepsomethingforarainyday.未雨绸缪。语法第一讲：定语从句2011年4月10日1.找出先行词；2.确定先行词在从句中的成分：主语，宾语，状语；3.选择正确的关系词。定语从句三部曲几个关系代词的基本用法that:可指人或物；可作主语，宾语。指人时，相当于who或whom；指物时，相当于whichAletter________iswritteninpencilisdifficulttoread.Doyouknowthegentleman_________spokejustnow?Whatisthequestion________t
2、heyaretalkingabout?Hereistheman______________youwanttosee.that/whichthat/whothat/whichwho/whom/thatthat先行词为不定代词时：all,much,everything,anything,nothing,something,none,theone.先行词被only,any,few,little,no,just,very,oneof等修饰时；先行词是序数词时或被序数词修饰时；先行词是最高级或被最高级修饰时；先行词既有人又有物时；6.先行词是数次时；(two,
3、ten,ahundred)只能用that不能用which的情况1.Thewriterandhisnovel____youhavejusttalkedaboutisreallywellknown.2.Themostimportantthing____shouldbedonerightnowishowtostophimfromgoingon.3.Thelastplace____wevisitedwasthechemicalworks.4.There'snothing____canbesaidaboutit.5.Thisisthethirdfilm____
4、hasbeenshowninourschoolthisterm.即学即用7.如果有两个从句，其中一个关系代词已用which,另一个关系代词宜用that，以避免重复；8.疑问词是who或which，关系代词宜用that，以避免重复；9.主句是Therebe结构，修饰其主句的定语从句宜用that作关系代词；被修饰成分为表语时，或者关系代词本身是定语从句的表语时,该关系代词宜用that。(主语+be+n./adj.;主语+系动词+adj.)只能用that不能用which的情况1.YesterdayIcaughttwofishandputtheminabas
5、inofwater.Nowyoucanseethetwo____arestillalive.2.Whoistheman____isstandingatthegate?3.That'sagoodbook_____willhelpyoualot.4.Thereisstillaseatinthecorner____isstillfree.5.Edisonbuiltupafactorywhichproducedthings_____hadneverbeenseenbefore.即学即用逗号和介词后面不能用thatwhich:指物；可作主语，宾语，状语。1.T
6、hebook_____wasonthedeskwasboughtbymyfather.2.Thebook_____Iboughtyesterdayisveryinteresting.3.Thefactory_____hisfatherworksisfarfromhere.which1.介词后面只能用which；IsthistheroominwhichMr.Whitelives?2.非限定性定语从句中。MoreandmorepeoplearebeginningtolearnEnglish,whichisbecomingverypopularinourc
7、ountry.3.当关系代词后面带有插入语时；Here'stheEnglishgrammarwhich,asIhavetoldyou,willhelpimproveyourEnglish.只能用which不能用that的情况4.先行词是those+复数名词. Ashopshouldkeepastockofthosegoodswhichsellbest.只能用which的情况who:主格,在从句中作主语，只可指人；whom:宾格，在从句中作宾语，只可指人；whose:属格，在从句中作定语，可指人也可指物。 （whose=ofwhich或ofwhom）I
8、likethestudentswhoworkhard. Allwhoheardthestorywereama
