1定语从句的讲解一.语法术语及基本概念:(1).先行词:被定语从句所修饰的那个词。(2).关系代词/关系副词:用来引导定语从句的关联词。(3).定语从句:用一个句子来修饰一个词时,我们称这个句子为定语从句。被定语从句所修饰的那个词叫先行词。定语从句由关系代词who,whom,whose,that,which以及关系副词when,where,why来引导,定语从句一般位于先行词之后。二.关系代词的用法(一)who,which,whom,that,whose的用法(1)先行词是_____,关系代词在定语从句中做_______时,用_____或_____来引导。e.g.Doyouknowtheman___________isstandingoverthere?Thegirl______tookyoutomyplaceismyfriend.(2).先行词是_____,关系代词在定语从句中做_____时,用____,____或____来引导。做宾语时,____跟_______可以互换,在介词后面必须用______,不能用____,也不能用______。Theboy________________wesawyesterdayisMr.Wang’sson.Theoldman_____________Ioftengotothefilmswithismygrandfather.(3).先行词是________,关系代词在定语从句中做______时,用_____,______来引导Heisnottheperson__________heusedtobe.(4).先行词是_______,关系代词在定语从句中做_______时,用______或______来引导。e.g.Thetrain_______hasjustleftisforGuangzhou.Theearthquake_______happenedin1906wasthebiggestinAmericanhistory.(5).先行词是____,关系代词在定语从句中做____时,用_____或____来引导。e.g.Thebird______wecaughttheotherdayflewawayyesterday.Thepen____IamwritingwithwasboughtintheShoppingCenter.(6).关系代词____的用法:关系代词______意思是“谁的”,“什么的”;它是who和which的所有格形式,它可以用来引导定语从句,并且在定语从句中做定语,修饰从句的_____或_______。e.g.Thisisthehouse______doorfaceseast.You’retheonlyone_____advicehemightlistento.关系代词指代定语从句中的成分whowhomthatwhichwhose2(二)关系代词的省略关系代词在做宾语,表语时可以省略。称_______Eg:Ihavebeentothecitytwice_________youjustvisited.Afterascoreofyears,Johnsonisnotthenaughtyboy______heusedtobe.(三)that和which的区别在定语从句中,当先行词是物时,引导词that和which常常可以通用,但以下几种情况需注意。注意1只宜于用which,不用that的情况。(1)先行词为that,those时。What’sthatwhichisunderthedesk?在桌子底下的那个是什么?(2)引导词(关系代词)前有介词时。Thisistheroominwhichhelives.这是他居住的房间。注意2只宜于用that,不用which的情况。(1)先行词是形容词最高级或者它的前面有形容词最高级修饰时。ThefilmisthemostinterestingthatIhaveeverseen.这部电影是我看过的最有趣的一部。Englishisthemostdifficultsubjectthatyouwilllearnduringtheseyears.英语会是这些年你学的最难的科目。(2)先行词是序数词或它的前面有last或序数词修饰时。It’sthefirstfilmthatIsawthisyear.这是我今年看的第一部电影。Tomisalwaysthefirstthatcomestotheclassroom.Tom总是第一个到3教室的人。(3)主句以疑问词who,which开头时,不用which或who,以避免重复。Whichisthebikethatyoulost?哪辆是你丢的自行车?(4)先行词既有人又有物时。Theyaretaikingaboutthesutdentsandtheschoolthattheyvisitedyesterday.他们正在谈论昨天访问的学生和学校。(5)先行词是all,much,little,something,everything,anything,nothing,none,theone等代词时。Youshouldhandinallthatyouhave.你应该把你有的所有上交。Wehaven’tgotmuchthatwecanofferyou.我们没有太多能提供给你。Isthisschooltheonethatwearegoingtovisittomorrow?这所学校是我们明天要参观的那个吗?Isthereanythingthatyouwanttobuy?你有什么想要买的东西吗?(6)先行词前有theonly,thesame,thevery等词修饰时。Theonlythingthatwecandoistogiveyousomemoney.我们能做的唯一的事就是给你一些钱。二.“介词+关系代词”的用法(一):介词的位置1.ThisisthestudentwhomIboughtabookfor.=42.ThisistheshipwhichIwenttoShanghaiby=(二)练习题1.Doyouknowwholivesinthebuilding______thereisawell?A.infrontofitB.infrontofwhoseC.infrontofwhichD.infrontwhich2.I’llneverforgettheday____IjoinedtheLeague.A.onwhichB.inwhichC.whichD.atwhich3.Thewoman_____mybrotherspokejustnowismyteacher.A.whoB.towhomC.towhoDwhom4.TheSecondWorldWar_____millionsofpeoplewerekilledin1945.A.duringwhichB.inthatC.whereD.onwhich5.Thespeed____whichyoudriveyourcarmustn’ttoohigh.三.关系副词的用法当引导定语从句的关系词在从句中用作时间,地点,原因,方式状语时,应使用关系副词when,where,why或”介词+which”.关系副词的作用如下:指代表示时间,地点,原因的先行词;在从句中充当句子成分-状语;起连接作用,把先行词跟定语从句连接起来。(一)when引导定语从句的用法1.当先行词是表示时间的名词(如time,day,year,month,week等),且关系词在从句中作时间状语时,定语从句用when引导2.When可以换成“介词+which”5Istillrememberthetime(=inwhich)Iwasincollege.Ihaveforgottentheexactdatewhen(=onwhich)thiscountrybecameindependent.[特别提醒:Doyourememberthedaysthat/whichwespenttogetheronthefarm?](二)where引导定语从句的用法1.当先行词是表示地点的名词(如place,room,mountain,airport等),且关系词在从句中作地点状语时,定语从句用wherer引导。2.Where可以换成“介词+which”Thisisthehotelwhere(=inwhich)theystayed.特别注意:(1)如果先行词为表示抽象地点的名词(如case,condition,situation,atmosphere)A.Wehavereachedapointwhereachangeisneeded.B.Hegetsintoasituationwhereitishardtodecidewhatisrightorwrong.C.Thebossofthecompanyistryingtocreateaneasyatmospherewherehisemployeesenjoytheirwork.(三)why引导定语从句的用法1.当先行词是表示原因的名词reason,且引导词在从句中作原因状语时,定语从句用why引导,且只能引导限制性定语从句。2.Why可以用forwhich来代替。6Thisisthereasonwhy(=forwhich)heleftinahurry