before这个词

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1、before这个词“before”过关练习及答案1.(2005山东)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典型例题解析：1.Someonecalledmeupinthemiddleofthenight,buttheyhungup＿＿Icouldanswerthephone．（NMET2000）   A．as      B．since      C．until      D．before分析：as表示时间时，强调主从句动作的连续性；since表示时间时，常用句型“主语＋havedonesth．＋since＋主语＋did＋宾语”；until表示连续性的含义，若终

8、止性动词同until搭配时，一定要用否定式；before在此表示“还没有（来得及）……就……”。所以答案为D。2.—Whydidn’tyoutellhimaboutthemeeting？(2006年四川)       —Herushedoutoftheroom