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1/6定语从句和其他易混句型对比和区别一．定语从句与并列句1.并列句用分号（；）或连接词and,but来连接。2.定语从句用关系词来引导，关系词具有两个作用：一是放在先行词与定语从句之间起连接（主句和从句）作用，二是充当从句中的一个成分。练习：1.MrLihasthreedaughters,noneof________isanengineer.2.MrLihasthreedaughters,butnoneof__________isadancer.3.MrLihasthreedaughters;__________aredoctors.二.定语从句与地点状语从句1.where引导的定语从句用来修饰表示地点意义的名词或代词，可以改成“介词+which”。2.where引导的地点状语从句用来修饰动词，表示动作发生或存在的地点，不可改成“介词+which”。3.做题时，先根据句意确定有无先行词。如有，是定语从句，如无，是状语从句。对比下面两个句子：Heleftthekeywherehehadbeenanhourago.Helefttheplacewherehelivedformanyyears.练习：1.Ricedoesn’tgrowwell_____thereisnotenoughwater.2.Istillrememberthefarm_____myparentsworkedtenyearsago.3.Thevisitoraskedtheguidetotakehispicture_____standsthefamoustower.A.thatB.whereC.whichD.there三.定语从句与强调句1.强调句型可以还原成正常语序的句子，也就是说，强调句型中去掉Itbe…that后，句子仍然通顺，意义也依然完整，只是没有那么强调突出。而定语从句去掉了Itbe…that后句子就不完整了。2.强调句型常常与定语从句混合使用。Coulditbeintherestaurantinwhichyouhaddinnerwithmeyesterdaythatyoulostyourhandbag?ItisinQingdaoyou'regoingtopayavisittothatthiskindofwashingmachineisproduced.ItwasinBeihaiParkwheretheymadeadateforthefirsttimethattheoldcoupletoleustheirlovestory.练习;1.ItisonthemorningofMay1st_____ImetJohnattheairport.2/6ItisthemorningofMay1st_____ImetJohnattheairport.2.Itisinthefactory_______Johnworks.Itisthefactory_______Johnworks.四.定语从句与结果状语从句1.such/thesame---as中，as是关系代词，其后句子不完整，as在从句中充当成分（主、宾或表语）。2.such---that结果状语从句中，其后句子是完整的，that只起连接作用。对比下面两个句子：Heissuchagoodteacherasweallloveandrespect.Heissuchagoodteacherthatweallloveandrespecthim.练习：1.Ihavethesamecomputer_____youhave.2.Sheissuchakindgirl_____allofusliketomakefriendswithher.3.Itissuchagoodplace_____everybodywantstovisit_____itiswell-knownallovertheworld.A.which;thatB.as;asC.as;thatD.that;as五.定语从句与习惯句型注意固定句型：Itisthefirst/second/thirdtimethat+从句（从句用现在完成时）1.Itisthefirsttime______shehasbeeninShanghai.2.Itwasthetime_______Chinesepeoplehadahardlife.答案:1.that2.when六.定语从句与单句注意标点符号：两个单句间用句号，而定语从句两个句子间用逗号。1.Themothertoldthelazyboytowork,____didn’thelp2.Themothertoldthelazyboytowork._____didn’thelp.练习：Thereare56studentsinourclass,mostof____aregirls.七.各句型之间的异同（一）定语从句与同位语从句的区别1.that连接同位语从句：放在抽象名词（news,idea,fact,suggestion,advice,hope等）之后，表明抽象名词的具体内容（中间加be可帮助理解）。同位语从句句子本身成分完整，that无意义，只起连接作用，不在从句中作任何成分，不能省略，也不可用which代替。3/62.that引导定语从句：定语从句句子不完整，that是关系代词，它在从句中不但起连接作用，同时在从句中作某一成分（主语、宾语或表语），作宾语时可省略，指物时还可用which替换，指人时常可用who代替。（二）强调句型与主语从句的区别强调句型中去掉Itbe…that后，句子仍然通顺，意义也依然完整，只是没有那么强调突出。主语从句的复合句中的it是指示代词，后面多为系表结构或被动语态。如果去掉Itbe…that，句子就不通顺了。（三）it,as与what三种句型的转换Whatiswellknowntousallisthatthe2008OlympicGameswereagreatsuccess.（what连接的主语从句）Itiswellknowntousallthatthe2008OlympicGameswereagreatsuccess.（形式主语it引导的主语从句）Asiswellknowntousall,the2008OlympicGameswereagreatsuccess.（as引导的定语从句）练习：1.Thenews______camefromthefrontwastrue.2.Thenews______hewonthegamewastrue.3.Shewasnot______sheusedtobe.4.Thecityisnolongeraplace_____itusedtobe.5._____isknowntousall,paperwasfirstmadeinChina.6._____isknowntousallthatpaperwasfirstmadeinChina.7.Shewasnotthewoman______sheusedtobe.Thecityisnolonger_____itusedtobe.典型练习题：1.I,___yourgoodfriend,willtrymybesttohelpyouout.A.whoisB.whoamC.thatisD.whicham2.Theoldmanhastwosons,___arelawyers.A.bothofthemB.bothofwhoC.bothofwhomD.bothofthey4/63.Heisamanofgreatknowledge,___muchcanbelearned.A.inwhomB.aboutwhomC.fromwhomD.ofwhom4.Icantellyou___hetoldmelastweek.A.allwhichB.allwhatC.thatallD.allthat5.Isoxygentheonlygas___helpsfireburn?A.thatB./C.whichD.what6.Air,___webreatheeveryday,isaroundusallthetime.A.thatB./C.whichD.it7.Thisisthemuseum____wesawanexhibitiontheotherday.A.thatB.whichC.whereD.inthat8.Thismuseumis___youvisitedtheotherday.A.thatB.whichC.whereD.theone9.Thisisthemuseum___yousawtheotherday.A.thatB.whereC.inwhichD.inthat10.Itisthethirdtime___latethismonth.A.thatyouarrivedB.whenyouarrivedC.thatyou’vearrivedD.whenyou’vearrived11.Itwasin1969___theAmericanastronautsucceededinlandingonthemoon.A.thatB.whichC.inwhichD.when12..Weoftenthinkofthedays___wespenttogetherontheisland.A.whenB.whichC.inwhichD.duringwhich13.HaveyoueverbeentoShanghai,____Ilefttenyearsago?A.whereB.whichC.thatD.when14.HehasleftBeijing,___ameetingistobeheld.A.whenB.whereC.asD.which15.Thisistheveryplace___I’mwishingtolivein.A.whereB.whichC.thatD.inwhich16.Ihaveboughtthesamedress____sheiswearing.A.asB.thatC.whichDthan17.Canyousolvesuchproblems___raisedbytheaudience?5/6A.whatwereB.aswereC.thatwereD.whichwere18.Thereason___hedidn’tcomewas____hewasinjured.A.that,becauseB.why,thatC.why,becauseD.that,that19.HemustbefromAfrica,____canbeseenfromhisskin.A.thatB.asC.itD.what20.Hisfatherdiedlastyear,____madeitimpossibleforhimtogoabroad.A.whenB.whichC.asD.that21.___isnatural,hemarriedMary.A.ItB.WhatC.WhichD.As22.Thebuses,____werealreadyfull,weresurroundedbyanangrycrowd.A.mostofthemB.mostofwhichC.whichmostD.thatmost23.All___isneededisasupplyofoil.A.thethingB.thatC.whatD.which24.Hepaidtheboy10dollarsforwashingtenwindows,mostof___hadnotbeencleanedforyears.A.theseB.thoseC.thatD.which25.Inthedarkstreet,therewasn’tasingleperson______shecouldturnforhelp.A.thatB.whoC.fromwhomD.towhom26.Thisisoneofthemeans____theelecticenergyis