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1、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
2、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’llneverfor
3、getit.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.
4、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t
5、hat只可有后置的修饰语.如:Thisbagistoosmall.Pleasegivemeabiggerone.Thisschoolistheonethatwevisitedlastweek.Theairinthecountrysideisfresherthanthatincities.Makethebestchoice:1.—Didyoufindyourdictionaryyesterday? —No,Ididn’tfind______,butI’vebought______. A.it/one B.one/one C.it/it D.
6、one/it2.Therecorderisbetterthan______Iboughtlastyear. A.theone B.one C.it D.whic3.ThepopulationofZiboissmallerthan_____ofBeijing. A.one B.that C.population D.then4.—Wouldyoulikeacupofcoffee? —No,I’vejusthad______. A.it B.that C.one D.theone5.Ihaveboughtanewbik
7、e.My_____doesn’twork. A.oldthat B.thatold C.theoldone D.oldone6.—Doyouhavemybook,MrYang? —Yes,Ihave_______righthere.A. one B.this C.it D.that 7.Is_______necessarythatwecleantheflooragain? A.one B.that C.this D.it 8.Thesepicturesaremorebeautifulthan_____onthewall.
8、 A.that B.those C.one D.ones
