It,One,That三词之用法区别1.它们三词均作代词用，指代前文提到的名词。但是it所指是同名同物，one和that所指是同名异物，如：我喜欢那辆汽车，可我没足够的钱买它。Ilikethecar,butIhavenoenoughmoneytobuyit.我喜欢汽车，可我买不起一辆。Ilikecars,butIcan’taffordtobuyone我想买的那辆汽车要比他的那辆漂亮得多。ThecarwhichIwanttobuyismuchmorebeautifulthanthathehas.2.It可以替名词性从句、动名词和不定式短语，还可充当形式主语或宾语，而one和that无此用法。如：我发现按时完成这项工作是不可能的。Ifinditimpossibletocompletetheprojectontime.哪里能找到足够的食物和水还是个问题。Itisaquestionwherewecanfindenoughfoodandwater.It可表示天气、时间、距离，以及现场情况知其为何事。3.It和that都可以指代上文的一部分或全句,而one不能。如:杰克和我在美国一起学习了三年,我是不会忘记这事的.JackandIstudiedtogetherintheUnitedStates;I’llneverforgetit.如何做得更快更好?那确实是个问题.Howtodoitbetterandfaster?Thatisreallyaquestion4.one和that虽然都可以用来指代前文同名异物的名词,但one指代同类中的一个,属于泛指=a/an+N;而that属于特指=the+N.如:Doyouneedmypen?No,thanks.Ihavegotone(=apen).Thebridgebuiltofsteelisstrongerthanthatbuiltofstone.=thebridge5.One只能代替可数名词,复数用ones,而that可数或不可数均可代,复数用those.如:篮子里很多苹果,请把烂的拣出来.Therearealotofapplesinthebasket.Pleasepickouttherottenones.我们的规章制度和别的机关的大为不同.Ourrulesarequitedifferentfromthoseofotherorganizations.北京的天气比上海的冷得多.TheweatherinBeijingismuchcolderthanthatinShanghai.6.One一般有前置或后置的修饰语,或没有;而that只可有后置的修饰语.如:Thisbagistoosmall.Pleasegivemeabiggerone.Thisschoolistheonethatwevisitedlastweek.Theairinthecountrysideisfresherthanthatincities.Makethebestchoice:1.—Didyoufindyourdictionaryyesterday?—No,Ididn’tfind______,butI’vebought______.A.it/oneB.one/oneC.it/itD.one/it2.Therecorderisbetterthan______Iboughtlastyear.A.theoneB.oneC.itD.whic3.ThepopulationofZiboissmallerthan_____ofBeijing.A.oneB.thatC.populationD.then4.—Wouldyoulikeacupofcoffee?—No,I’vejusthad______.A.itB.thatC.oneD.theone5.Ihaveboughtanewbike.My_____doesn’twork.A.oldthatB.thatoldC.theoldoneD.oldone6.—Doyouhavemybook,MrYang?—Yes,Ihave_______righthere.A.oneB.thisC.itD.that7.Is_______necessarythatwecleantheflooragain?A.oneB.thatC.thisD.it8.Thesepicturesaremorebeautifulthan_____onthewall.A.thatB.thoseC.oneD.ones9.Iwasdisappointedwiththefilm.Ihadexpressed_____tobemuchbetter.A.thatB.thisC.oneD.it10._____isafactthatEnglishisbeingacceptedasaninternationallanguage.A.ThereB.ThisC.ThatD.It11.Ihopethereareenoughglassesforeachguesttohave_______.A.itB.thoseC.themD.one12.Fewpleasurescanbeequalto______ofacooldrinkonahotday.A.someB.anyC.thatD.those13.—Whydon’twetakealittlebreak?—Didn’twejusthave______?A.itB.thatC.oneD.this14.Tom’smotherkepttellinghimthatheshouldworkharder,but_____didn’thelp.A.heB.whichC.sheD.it15.Thereisaphotoonthewall._____aphotoofleiFeng.A.ItB.It’sC.ItsD.He’s16.Doyouconsider______wisetotellhimthetruth?A.thatB.thisC.whichD.it17.Ilostmypen.I’mlokingfor______.A.oneB.thatC.itD.this18.Iglancedmywatch.______wasearlierthanIthought.A.ThereB.ThisC.ThatD.It19._____isimportantforustolearnforeignlanguages.A.ThisB.HeC.ItD.That20.______needsfurtherdiscussionwhetherwe’llbuildalibraryornot.A.WeB.HeC.ItD.There21.TheParkersboughtanewhousebut_______willneedalotofworkbeforetheymovein.A.theyB.itC.oneD.which22.Peopleinthewestmake______aruletobuyChristmaspresentsfortheirrelativesandfriends.A.itB.thatC.thisD.as23.Itwasshe______gaveasharpwhistle,______makesitpossibleforustocatchthethief.A.who/thatB.that/thatC.that/whichD.who/it24.We’llgotothecinematonight.Wemustbooktheticketsinadvance.Who’dliketodo______?A.thatB.itC.thisD.one25.____doesn’tmakeanydifferencemybeingthere.A.ThatB.WhichC.HeD.It26.Ihate_____whenpeopletalkwiththeirmouthsfull.A.itB.thatC.theseD.them27._____wasDecember26,1893______MaoZedongwasborninacommonvillage.A.Theday/whenB.It/thatC.It/whenD.That/onwhich28.Wasn’t______ashamethatshecouldneverhaveanyrealhappiness.A.thereB.thisC.thatD.it29.Itwas______discoveredthesecretfirst.A.IwhoB.methatC.myselfthatD.myselfwho30.Thebabywascrying.Hismotherfound______hardtomakehimlaugh.A.herB.thisC.thatD.itKeys:1-5AABCD6-10CDBDD11-15DCCDB16-20DCDCC21-25BACBD26-30ACDAD
