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1、before這個詞“before”過關(guān)練習(xí)及答案1.(2005山東)Itwassometime_______werealizedthetruth.A.when?????B.until?????C.since?????D.before2.(2006福建)-Howlongdoyouthinkitwillbe_____chinasendsamannedspaceshiptothemoon？----Perhapstwoorthreeyears.??A.when???????B.until???????C.that?????D.befor
2、e3.－－Whydidn’tyoutellmehimaboutthemeeting?－－Herushedoutoftheroom____Icouldsayaword.A.before???????B.until???????C.when???????D.after4.－Hemadeamistake,butthenhecorrectedthesituation____itgotworse.A.until??????B.when??????C.before??????D.as5.－Severalweekshadgoneby____I
3、realizedthepaintingwasmissing.A.before?????B.since??????C.when?????????D.after6.－TheAmericanCivilWarlastedfouryears____theNorthwonintheend.???A.after???????B.when???????C.before???????D.then7.－Howlongdoyouthinkitwillbe____Chinasendsamannedspaceshiptothemoon?－Perhapst
4、woorthreeyears.A.before???????B.that???????C.when?????????D.until8.－Itwassometime____werealizesthetruth.???A.since?????????B.when?????C.before???????D.then9.It____longbeforewe____theresultoftheexperiment.A.willnotbe;willknow???B.is;willknowC.willnotbe;know???D.is;kno
5、w10.Scientistssayitmaybefiveorsixyears____itispossibletotestthismedicineonhumanpatients.??A.since???????B.when?????C.before??????D.then11.Itwasevening____wereachedthelittletownofWinchester.A.before??????B.when?????C.since???????D.then12.Timepassedquicklyandthreeweeks
6、wentby____weknewit.A.since???????B.after?????C.then???????D.before13.Wehadtosellvegetablesatalowprice____theyrottedaway.A.when???????B.before???C.then?????D.since14.Hemadeamistake,butthenhecorrectedthesituation_____itgotworse.（03北京）A.until???B.when???C.before???D.as1
7、--5DDACA??6—10CACCC????11—14ADBCBefore典型例題解析：1.Someonecalledmeupinthemiddleofthenight,buttheyhungup＿＿Icouldanswerthephone．（NMET2000）???A．a(chǎn)s??????B．since??????C．until??????D．before分析：as表示時間時，強調(diào)主從句動作的連續(xù)性；since表示時間時，常用句型“主語＋havedonesth．＋since＋主語＋did＋賓語”；until表示連續(xù)性的含義，若終
8、止性動詞同until搭配時，一定要用否定式；before在此表示“還沒有（來得及）……就……”。所以答案為D。2.—Whydidn’tyoutellhimaboutthemeeting？(2006年四川)???????—Herushedoutoftheroom?
