定语从句考点例析when在定语从句中作时间状语，相当于“介词+关系代词（which）”。I’llneverforgetthedaywhenIjoinedtheleague.onwhichwhere在定语从句中作地点状语，相当于“介词+关系代词（which）”。ThisisthehousewhereIlivedtwoyearsago.inwhich定语从句中的关系副词why在定语从句中作原因状语，相当于“介词for+关系代词（which）”。Doyouknowthereasonwhyshewaslate.Itrainedheavily,forwhichhewaslatefortheclass.考点一：that和which以下情况，引导词用that，不用which。1.先行词为不定代词everything，little，much，all，anything，nothing。e.g.Finally,thethiefhandedeverythingthathehadstolen.2.先行词前有形容词最高级、序数词修饰时，用that。e.g.Thisisthebestbook(that)I’veeverread.3.先行词被theonly，thevery，thelast修饰时，用that。e.g.HeistheonlypersonthatIwanttoseenow.4.先行词同时指人和指物时，用that。e.g.Wetalkedaboutthethingsandpersonsthatwesawthen.5.定语从句内容为解释名词的性质、概念时，需用that。（先行词作表语）e.g.Aplaneisamachinethatcanfly.考点二：连接词which的用法Which引导非限定性定语从句，其先行词可是一个词,也可是整个主句或主句的某一部分。e.g.1.Sheheardaterriblenoise,______broughtherheartintohermouth.A.itB.whichC.thisD.that2.Theweatherturnedouttobegood,___wasmorethanwecouldexpect.A.whatB.whichC.thatD.itBB考点三：介词+关系代词“of+which/whom”可用来限定名词、代词、分数词、数词等。e.g.1.Inthedarkstreet,therewasn’tasingleperson____________shecouldturnforhelp.A.thatB.whoC.fromwhomD.towhom2.Hepaidtheboy$10forwashingthewindows,mostof________hadn’tbeencleanedforatleastayear.A.theseB.thoseC.thatD.whichDD关系代词前介词的确定1.根据从句中动词与先行词的逻辑关系，请体会：e.g.Isthatthenewspaperforwhichyouoftenwritearticles?2.根据从句中动词或形容词的习惯搭配，如：e.g.CanyouexplaintomehowtousetheseidiomsaboutwhichI’msure.3.根据先行词与介词的搭配习惯，请体会：e.g.1949wastheyearinwhichtheP.R.C.wasfounded.关系代词前介词的确定4.非限制性定与从句中，要表示先行词的一部分时，可用“数词/代词+of+关系代词”的结构，如：e.g.Thereare50studentsinourclass,two-thirdsofwhomhavebeentoBeijing.关系代词前的介词的确定5.Whose从句可转换为“of+关系代词”型，如：e.g.Theyliveinahouse,whosedooropenstothesouth.Theylivedinahouse,ofwhichthedooropenstothesouth.Theylivedinahouse,thedoorofwhichopentothesouth.Fillintheblankswithproperprepositions:1.Thesungivesusheatandlight,________whichwecan’tlive.2.Thestudent________whomweweretalkingjustnowisthebeststudentinourclass.3.I’llneverforgettheday_____whichshesaidgood-byetome.4.Whocangivemethereason______whichhehasn’tturnedupyet?foraboutonwithout考点四:关系副词的运用在限定性和非限定性从句中，when的先行词是时间名词，where的先行词是地点名词，分别在定语从句中做状语。e.g.1.AfterlivinginParisfor50yearshereturnedtothesmalltown______hegrewupasachild.A.whichB.whereC.thatD.when2.Itwasanexcitingmomentforthesepeoplethisyear,______forthefirsttimetheirteamwontheWorldCup.A.thatB.whileC.whichD.whenBD考点五：as与which引导的定语从句两者均可引导非限制性定语从句，有时可以互换，但下列情况多用as。1.关系代词引导的定语从句居句首时。e.g.Asweallknow,theearthisround.2.当与such或thesame连用时，一般用as。e.g.Suchbooksasyoutellmeareinteresting.Ihavethesameplanasyou.3.当从句和主句语义一致时，用as，反之则用which。e.g.Shehasmarriedagain,aswasexpected.Shehasmarriedagain,whichwasunexpected.4.as在从句中作主语时，后面常接行为动词的被动语态，如beknown，besaid，bereported等，如从句中行为动词是主动语态，一般要用which作主语。e.g.Sh...
