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1、I.定语从句中注意的问题1.非限定性定语从句：不用that/宾语不可省/which可以代指一件事、一句话2.非限定性定语从句与并列句Hehastwosons,bothofwhomaredoctors.Hehastwosons,andbothofthemaredoctors.3.that和which在下列情况下只用that，不用which①先行词是all,everything,nothing,anything,little,much,theone等不定代词时②先行词被序数词或形容词最高级修饰时③先行词被theonly,thevery(正是,恰是),thes
2、ame,thelast修饰时④当先行词有两个或两个以上时,既有人又有物,定语从句用that引导(that既可指人也可指物)以下情况只能用which引导定语从句。①引导非限制性定语从句时,其先行词可是一个词,也可是整个主句或主句的某一部分②先行词是物，紧接在介词后面时.先行词是人称代词he,they,anyone或those时后用who.4.Isthistheschoolthat/whichyouvisited?Isthisschooltheoneyouvisited?5.介词+which（物）/whom(人）6.Whose+n=the+nofwhicho
3、fwhichthe+n名词是物=the+nofwhom=ofwhomthe+n名词是人也就是说whose即可指人也可指物7.注意插入语wouldyoupleasepickoutthestudentwhoyouthinkisgoodatEnglish.8.thesituation/case/scene/stage/pointwhere+完整句子thewayinwhich/that/不填+完整句子theoccasionwhen+完整句子9.as和which①位置②意义③后所加动词的语态asisoftenthecase/asisreported/.Aswass
4、aidabove/asoftenhappenssuch/so…as…thesame…as…练习：Correctmistakes1.Underthebigtreeare34students,manyofthemcomefromclasstwo.2.Mymotherhasagoodbook,whichcoverlooksterrible.3.Thisistheverypenthatyougaveittomebefore.4.Thereisanoldwoman,thatisholdingastick.———whom———whoseit——who5.Itis
5、theonlyoneofthebestfilmsthathavebeenshownrecently.6.ThethirdplacewhichwearegoingtovisitisHangzhou.7.Thestudentsandthingswhichyouspokeofareknowntous.thathasthat—————————Completethefollowingsentences:1.Isthistheschool_____________youvisitedlastyear?Isthisschool___________youvisited
6、lastyear?2.Heisoneofthestudentswho_____goodatmaths.Heistheonlyoneofthestudentswho_____goodatmaths.3.Thegirl_____Ithinkwashonestliedtome.Thegirl______Ithinktobehonestliedtome.4.Chinaisnolonger_______shewas10yearsago.Chinaisnolongerthecountry______shewas10yearsago.(that/which)theon
7、eareiswhowhomwhatthatII.名词性从句1.that和what区别that不做任何成分，后跟完整的句子what即担任主句的成分又担任从句的成分，即做双重成分2.if和whether区别只用if的情况：宾语从句为否定形式Idon’tcareifyoudon’tcome.只用whether的情况：介词后；discuss后；主语从句前置，宾语从句前置，同位语从句，表语从句；和or,ornot,todo连用时3.wh-ever即可引导状语从句，又可引导名词性从句，nomatterwh-只可引导状语从句。Whatever+n./however+a
8、djHoweverlateheis,hiswifewillwaitforhim.
