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1、It,One,That三詞之用法區(qū)別1.它們三詞均作代詞用，指代前文提到的名詞。但是it所指是同名同物，one和that所指是同名異物，如：我喜歡那輛汽車，可我沒足夠的錢買它。Ilikethecar,butIhavenoenoughmoneytobuyit.我喜歡汽車，可我買不起一輛。Ilikecars,butIcan’taffordtobuyone我想買的那輛汽車要比他的那輛漂亮得多。ThecarwhichIwanttobuyismuchmorebeautifulthanthathehas.2.It可以替名詞性從句、動名詞和不定式短語，還可充當形式主語或賓語，而one和that無此用法
2、。如：我發(fā)現(xiàn)按時完成這項工作是不可能的。Ifinditimpossibletocompletetheprojectontime.哪里能找到足夠的食物和水還是個問題。Itisaquestionwherewecanfindenoughfoodandwater.It可表示天氣、時間、距離，以及現(xiàn)場情況知其為何事。3.It和that都可以指代上文的一部分或全句,而one不能。如:杰克和我在美國一起學習了三年,我是不會忘記這事的.JackandIstudiedtogetherintheUnitedStates;I’llneverforgetit.如何做得更快更好?那確實是個問題.Howtodoit
3、betterandfaster?Thatisreallyaquestion4.one和that雖然都可以用來指代前文同名異物的名詞,但one指代同類中的一個,屬于泛指=a/an+N;而that屬于特指=the+N.如:Doyouneedmypen?No,thanks.Ihavegotone(=apen).Thebridgebuiltofsteelisstrongerthanthatbuiltofstone.????????????????????????????????=thebridge5.One只能代替可數(shù)名詞,復數(shù)用ones,而that可數(shù)或不可數(shù)均可代,復數(shù)用those.如:籃子
4、里很多蘋果,請把爛的揀出來.Therearealotofapplesinthebasket.Pleasepickouttherottenones.我們的規(guī)章制度和別的機關的大為不同.Ourrulesarequitedifferentfromthoseofotherorganizations.北京的天氣比上海的冷得多.TheweatherinBeijingismuchcolderthanthatinShanghai.6.One一般有前置或后置的修飾語,或沒有;而that只可有后置的修飾語.如:Thisbagistoosmall.Pleasegivemeabiggerone.Thisscho
5、olistheonethatwevisitedlastweek.Theairinthecountrysideisfresherthanthatincities.Makethebestchoice:1.—Didyoufindyourdictionaryyesterday??????—No,Ididn’tfind______,butI’vebought______.?????A.it/one?B.one/one??C.it/it?D.one/it2.Therecorderisbetterthan______Iboughtlastyear.???????A.theone?B.one?C.it?
6、D.whic3.ThepopulationofZiboissmallerthan_____ofBeijing.???????A.one?B.that?C.population?D.then4.—Wouldyoulikeacupofcoffee?????—No,I’vejusthad______.???????A.it?B.that?C.one?D.theone5.Ihaveboughtanewbike.My_____doesn’twork.???A.oldthat?B.thatold?C.theoldone?D.oldone6.—Doyouhavemybook,MrYang?????—Y
7、es,Ihave_______righthere.A.?????one?B.this?C.it?D.that??7.Is_______necessarythatwecleantheflooragain????????A.one?B.that?C.this?D.it??8.Thesepicturesaremorebeautifulthan_____onthewall.??????A.that?B.those?C.one?D.ones?
