1定语从句专项讲解与练习定语从句的定义：从句作定语，修饰名词、代词，这样的从句叫定语从句。定语从句所修饰的词叫先行词。定语从句作定语放在先行词的前面。如果要表达:我喜欢那个漂亮的女孩。Ilovetheprettygirl.如果要表达：那个喜欢我的女孩。只能借助于定语从句thegirlwholovesme.其中thegirl即为定语从句的先行词，而who即为定语从句的关系词。指人：who、whom关系代词指物：which、as（作主宾表）指人和物:that,whose关系词表时间：when关系副词表地点：where（作状）表原因：why1、who指人，who在从句中当主语。HewhohasnotreachedtheGreatWallisn’tatrueman.不到长城非好汉。Theteacher___________spokeatthemeetingjustnowishavingarestinhisoffice.中文意思：____________________________________________________________________?作主语时不能省略，作宾语时可省略。2、whom指人，是who的宾格形式，在从句中作宾语，前面没有介词时，可用who/that来代替，也可省略。Thegirl___________________Ilikeisn’therenow.中文意思：____________________________________________________________________Thedoctorwith________________shewenttotheUnitedStateslastmonthisveryfamous.中文意思：____________________________________________________________________Theperson___________________youmetyesterdayisourChineseteacher.中文意思：____________________________________________________________________3、whose指“谁的”，或“某物的”，在从句中作修饰词。whose和它所修饰的名词在定语从句中可作主语及动词或介词的宾语。Thegirl___________fatherisadoctorisourclassmate.You’retheonlyone____________advicehemightlistento.中文意思：____________________________________________________________________I’dlikearoom_______________windowlooksoutoverthesea.中文意思：____________________________________________________________________4、that在从句中作主语或宾语，既可以指人又可以指物；作宾语时可以省略。Sheistheveryperson(that)Iwanttoseeatonce.中文意思：____________________________________________________________________Aplaneisamachine_____________canfly.中文意思：____________________________________________________________________25、which在从句中作主语或是宾语，只能指物；WestLake______________liesinHangzhouisoneofthemostfamouslakesinChina.中文意思：____________________________________________________________________Thecoat(___________________)Iputonthedeskisblack.6、as当先行词有such,so,thesame等修饰时,关系代词要用as；as在从句中可作主语，宾语和表语。e.g.1).Ihaveneverseensuchakindgirlassheis.2).Heissuchagoodteacher(sogoodateacher)aseverystudentrespects.※但在以下两种情况下有区别：.as从句可位于句首(或主句前),而which从句只能在主句后。e.g.____isoftenthecase,wehaveworkedouttheproductionplan.A.WhichB.WhenC.WhatD.Asthat,which可以在从句中当主语或宾语，当宾语时可以省略。whom在从句中是当宾语的，也可以省略。但是，当以上关系词前面有介词时，就不能省略。A）指人时who,whom,that这些词代替的先行词是人的名词或代词，把以下两个句子合并成一句：Ithankthewoman.Thewomanhelpsmealot.Ithankthewomanwho(that)helpsmealot.（主语）ThemanwasJone.Isawhim.Theman(whowhomthat)Isawwasjone.(作宾语)Shewasthewoman.Itoldyouabouther.Shewasthewoman(whowhomthat)Itoldyouabout.(做介词宾语)/ShewasthewomanaboutwhomItoldyou.(介词后只能用宾格)B）指物时which,that它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，把以下两个句子合并成一句：Aprosperityappearsinthecountryside.Aprosperityhadneverbeenseenbefore.Aprosperitywhich/thathadneverbeenseenbeforeappearsinthecountryside.农村出现了前所未有的繁荣。（which/that在...
