unit5关系副词引导定语从句

关系副词引导定语从句,when,where,why的三个作用？1.代替？2.做成分？3.连接？,when:先行词常是表时间的名词IcantforgetthenightwhenIcametothefarm.ThedaywhenNelsonMandelahelpedmewasoneofmyhappiestdays.,Doyourememberthedays_wespenttogetheronthefarm?这个空填when还是which/that?为什么？,where:先行词常是表地点的名词Thefactorywherehisfatherworksisinthewestofthecity.TheschoolwhereIstudiedforonly2yearswas3kilometresaway.,Thisisthefactory_heusedtowork.Thisisthefactory_Ivisitedlastyear.填where还是which/that?为什么？,Why:先行词通常是reasonIdontknowthereasonwhyhedidntcometoschoolyesterday.,关系代词作介词的宾语时，可以将定语从句中的介词提到关系代词前，形成“介词+关系代词”机构ThisitthebookwhichTomoftentalksabout.介词+关系代词引导定语从句关系代词：只能用which/whom介词如何选择？,Thisisthebook_whichIspent5yuan.Thisisthebook_whichIpaid5yuan.,Iremembertheday_whichIjoinedtheparty.thedays_whichIlivedthere.themonth_whichIstayedthere.,介词根据句子意义而确定：Thisisthepilotwithwhommyyoungerbrotherhasworkedfortenyears.,Theperson_Ilivedwasagoodfriendofmine.和我住在一起的人是我的一个好朋友。Thehouse_Iwasstayingwasfarawayfrommywork.我正居住的房子离我工作的地方很远。,Thecompany_Iworkedwasfounded5yearsago.我为之工作的公司是在5年前建立的。Theaddress_allmylettersweresentwasinSouthAfrican.我所有的信被寄往的地址是在南非。,when/where/why与“介词+关系代词”的替换1.when相当于at/in/during/on等+whichThedateonwhichhejoinedthepartywasjuly1,1984.句中onwhich=when,2.where相当于in/at/on等+whichThehouseinwhichhelivedisnowalibrary句中inwhich=where,3.why=forwhichIsthatthereasonforwhichhewasabsentfr