when,where,why定语从句

关系副词先行词在从句中充当的成分这些关系副词均可用“介词+which”来代替when表示时间的词，如day,year,date,time等时间状语Where表示地点的词，如place,city,Beijing等地点状语Why表示原因的词reason原因状语关系副词在定语从句中作状语，一般不可省略。Where的用法在定语从句中作地点状语，指代地点，其前有表示地点的名词。此时常可用inwhich,onwhich,atwhich,towhich等结构代替。Eg.Potatoescanbegrowninplaceswhereitistoocoldtogrowrice.（=Potatoescanbegrowninplacesinwhichitistoocoldtogrowrice.）有些太冷不能种稻米的地方，可以种马铃薯。When的用法在定语从句中作时间状语，指代时间。此时，常可用onwhich,inwhich,atwhich,duringwhich等代替。Ishallneverforgetthedayswhenweworkedonthefarm.(=Ishallneverforgettheduringwhichweworkedonthefarm.)我们永远也不会忘记我们在农场劳动的那些日子。Why的用法Why指原因或理由，在定语从句中作原因状语，可用forwhich来代替，它的先行词通常为reason.IhavecomearoundtoexplainthereasonwhyIwasabsentfromthemeeting.(=IhavecomearoundtoexplainthereasonforwhichIwasabsentfromthemeeting.)我来是为了解释我当时没到会的原因。Wearelivinginanage____manythingsaredoneoncomputer.（2003北京春）A.whichB.thatC.whoseD.when［考题2］Thefilmbroughtthehoursbacktome____Iwastakengoodcareofinthatfarawayvillage.（2001）A.untilB.thatC.whenD.whereDC［考题3］Itwasanexcitingmomentforthesefootballfansthisyear，____forthefirsttimeinyearstheirteamwontheWorldCup.（2000北京、安徽春）A.thatB.whileC.whichD.when［答案］D［考题4］AfterlivinginParisforfiftyyearshereturnedtothesmalltown____hegrewupasachild.（1996）A.whichB.whereC.thatD.when［答案］BWe’rejusttryingtoreachapoint____bothsideswillsitdowntogetherandtalk.（2006山东）A.whereB.thatC.whenD.which［答案］A--whatdoyouusuallydoinyoursparetime?--Ienjoyreadinginthelibrary_______Ilosemyselfinaworldofgoodbooks.A.whichB.thatC.whereD.whenCIdon’tknowthereason________hecamesolate.Thisistheoffice_______heworked.Istillremembertheday_______IfirstmetJennifer.Doyoustillrememberthedays-wespenttogetherinschool?Thisisahallthemedicalconferencewillbeheld.若关系词在修饰表示时间或地点的先行词的定语从句中充当主语、宾语等而不是状语时,需用which或that引导相应的定语从句。whywherewhenwhich/thatwhere