高中英语unit1grammar定语从句课件新人教版必修

,定语从句通常由关系代词(）或关系副词（）引导,“介词关系代词”引导定语从句如果先行词是人，则由“_”引导如果是物，则由“_”引导,先行词是way时，后面定语从句可以用先行词是reason时，用,介词whom,介词+which,inwhich=that=(),why=forwhich,which,that,who,whom,where,why,when,Whoisshe?,Cecilia,_tookweight-losspills,nowrealizesthathealthisimportant.Cecilia,_bodyisthin,stillwantstolosesomeweight（减肥）.,who,whose,Hemissedtheshow,whichwasagreatpity.Shewasawardedagoldmedal,whichthewholefamilyconsideredagreathonor.Shewasverypatienttowardsthechildren,whichherhusbandseldomwas.,限制性定语从句与先行词之间不用逗号隔开；非限制性定语从句与先行词之间一般用逗号隔开。,Mycousinwhosefatherisateacherwantstobeanactor.Mycousin,whosefatherisateacher,wantstobeanactor.,关系词,引导非限定性定语从句的关系代词：引导非限定性定语从句的关系副词主要有：when,where,1.A.ThisistheplacewhereIlivedtenyearsago.B.SheisgoingtospendthewinterholidayinMacao,whichreturnedtoChinain1999.2.A.HeisamanwhoIcanaskforhelp.B.Hisfather,whoworksinBeijing,camebackyesterday,限制性定语从句和先行词关系密切，如果去掉从句，剩余部分意义不完整；非限制性定语从句只是先行词的附加说明，如果去掉从句，意义仍然完整。,Hemissedtheshow,whichwasagreatpity.Heinvitedmetodinner,whichmademehappy.,非限制性定语从句中关系代词which/as可指整个主句的意思或一部分意思。As引导的定语从句既可以位于句末，也可以位于句首或句中。Aseveryoneknows,Chinaisacountrywithalonghistory.正如大家所知，中国是一个有着悠久历史的国家。Sheisateacher,asisclearfromhermanner.她是位教师，这一点从她的举止可以清楚地看出。,Moreexamples,在ofwhich/whom之前可以使用表达数量或定位的数词或代词。,1.Iamdoingdifferenttypesofexercises,allofwhicharequitehelpfultomyhealth.2.Manypeople,someofwhomarenotoverweight,aregoingondiets.3.Thereare54studentsinmyclass,threeofwhomcomefromUS.,Otherexamples,限制性定语从句与非限制性定语从句:,TheboyisTom.Theboyisquitefat.,TheboyisTom.Theboyhasaroundface.,TheboywhoisquitefatisTom.(主语),TheboywhohasaroundfaceisTom.,TheboyisTom.Hesitsinfrontofme.,TheboywhositsinfrontofmeisTom.,Fillintheblankswithproperrelativewords.1.Thefamousbasketballstar,_isanAmerican,cametoChinayesterday.2.Inthosedays,sheusedtogotoMrblack,with_shehadawonderfultime.3.Iboughtacaryesterday,_costmealot.,who,whom,which,1、找出两个句子中的重复部分或指代与被指代部分2、选定一个句子作主句（通常是告诉读者较重要信息的句子）3、把另一个句子中重复的词或代词换成关系词（根据指人还是指物、在句中作什么成分等来确定,把两个句子合并成包含定语从句的句子的方法：,Themaniskind.Everyonelikeshim.,Theman(who)everyonelikesiskind.(宾语),Thewomangotthejob.Wesawheronthestreet.,Thewoman(whom)wesawonthestreetgotthejob.,Theteacherwillgiveusatalk.Wemettheteacheryesterday.,Theteacher(whom)wemetyesterdaywillgiveusatalk.,Theboyisinthelab.Youwanttotalktohim.,Theboy(whom)youwanttotalktoisinthelab.,Theboytowhomyouwanttotalkisinthelab.,Thisistheboy.Isitbehindhim.,Thisistheboy(whom)Isitbehind.,ThisistheboybehindwhomIsit.,Differences,1.限定性定语从句:引导词有时可以省略。非限定性定语从句:引导词不可以省略。2.限定性定语从句:先行词可以用that引导。非限