初三英语定语从句I.关系代词that,which,who(whom)引导的定语从句【知识梳理】1.指人的关系代词：who/whom/that先行词在从句中作主语：Adoctorisapersonwho/thatlooksafterpeople'shealth.先行词在从句中作宾语：MrWhiteinvitedmanyfriendstohisparty(who/whom/that)herespectedmuch.关系代词前有介词：Nancyistherightpersononwhomyoucandepend.2.指物的关系代词：which/that先行词在从句中作主语：Theriverwhich/thatrunsthroughthecitybringsuslotsofpleasure.先行词在从句中作宾语：Thebook(which/that)youjustlaidontheshelfismine.关系代词前有介词：HereisthemoneywithwhichIwillbuyapiano.总结：⑴关系代词中在从句中充当主语的是which、that、who且在句中不可以省略。⑵关系代词中在从句中充当宾语的是which、that、who、whom且可以省略。⑶当关系代词前有介词时，指人只能用whom，指物只能用which。⑷which只能指物，who\whom只能指人，that既可指人又可指物。3.表示所有格：whose(既表示人的所有也表示物的所有)表示人的所有：Thegirlwhosefatherisamodelworkerisourmonitor.表示物的所有：I'dlikearoomwhosewindowlooksoutoverthesea.★the+名词+of+whom(which)的结构=whose+名词，下面三句意思相同,1.Theriverwhosebanksarecoveredwithtreesflowstothesea.2.Theriverofwhichthebanksarecoveredwithtreesflowstothesea.3.Theriverthebanksofwhicharecoveredwithtreesflowstothesea.1)Therearetwentystudents,whosebackgroundsaredifferent.2)Therearetwentystudents,thebackgroundsofwhomaredifferent.3)Therearetwentystudents,ofwhomthebackgroundsaredifferent.活学活用：Theclassroomwhosedoorisbrokenwillberepairedsoon.记住下列表格关系代词指人指物主格who、thatthat、which宾格whom、who、thatthat、which所有格ofwhom、whoseofwhich、whoseII.关系副词wherewhenwhy引导的定语从句【知识梳理】Doyouremembertheteahousewhereweusedtoplaychess?(where=atwhich)例如:Therewasatimewhentherewasnoradio,TVorcinema.(when=duringwhich)Thedaysaregonewhenhewasanignorantboy.(when=inwhich)Theydidn'texplainthereasonwhytheyhadcanceledtherehearsal.(why=forwhich)(定语从句中关系副词可以换成介词+关系代词)注意：有些先行词后面既可以用关系代词，也可以用关系副词。判断的重点在于分析先行词在定语从句中充当什么句子成分。以thecity为例(1)Thisisthecitythat/whichIvisitedlastyear.分析：主句：Thisisthecity.从句：Ivisitedthecitylastyear.visit:vt.，thecity充当的成分：宾语(2)ThisisthecitywhereIlivedlastyear.分析：主句：Thisisthecity.从句：Ilivedinthecitylastyear.live:vi.，thecity充当的成分：状语，表地点。【例题精讲】用适当的关系代词和关系副词填空1)Thehouse____________liesinthebackofourclassroomistheteachers2)Thehouse___________doorfacesnorthisourteachers'office.3)Ialwaysrememberthedays___________aremyfamily'sbirthday.4)Ialwaysrememberthedays___________Ilivedwithmygrandparents.Keys:1)which/that2)whose3)which/that4)when【课堂练习】1)Xiamen___________weliveinisabeautifulcity.2)Xiamen_____________manyforeignerscometovisitisabeautifulcity.3)Thisisthereason______________causedmelateforschooltoday.4)Iquiteagreewiththereason_____________youtoldme.5)Xiamen___________liesinthesoutheastofChinaisabeautifulcity.Keys:1)which/that/x2)which/that/x3)which/that4)which/that5)which/that易错考点梳理I.关系代词只能用that，而不能用which的情况：'office.1)当先行词被为不定代词。如：Thereisnothing(that)Icansayaboutit.2)先行词为形容词最高级或被形容词最高级修饰时。如：ThisisthebestbasketballmatchthatIhaveeverseen.3)先行词被theonly或thevery修饰时。如：Theonlythingthatwecandoistoaskourteachers'help.Isthistheverymuseumthatyouvisitedtheotherday?4)先行词为序数词或被序数词...