英语中倍数的表达法及相关练习

1、英语中倍数的表达法及相关练习“倍数”的表达方式总结Thehouserentisexpensive.I'vegotabouthalfthespaceIhadathomeandI'mpayinghere（.2003上海）A.asthreetimesmuchB. asmuchthreetimesC. muchasthreetimesD. threetimesasmuch该题的正确答案为D.显然本题是在考查倍数的表达法。倍数表达法是高中英语教学的重点，也是历年的高考热点之一。下面对倍数的几种表达法作一归纳：一、用times表示倍数（一般限于包括基数在内三倍或三倍以上的数。表示两倍的数，

2、一般用twice）。其句式有：（前三种为主）1. ",times形容词/副词的比较级+than,例如：LineABisthreetimeslongerthanlineCD.线段AB是（线段）CD的三倍长。Thishallisfivetimesbiggerthanourclassroom.这个大厅比我们的教室大5倍。ThisropeistwicelongerthanthatoneThishallisfivetimesbiggerthanourclassroomThecarrunstwicefasterthanthattruck2. ",times+a的容词/副词的原级+as,

3、例如：Thistableisthreetimesaslongasthatone.这张桌子是那张桌子的三倍长。Thisdictionaryisfivetimesasthickastheoneyouborrowedfromthelibrary.这本词典的厚度是你从图书馆借的那本（厚度）的5倍。AsiaisfourtimesaslargeasEurope亚洲的面积是欧洲的四倍。Thisbigstoneisthreetimesasheavyasthatone这块大石头的重量是那一块的三倍。（这块石头比那块重二倍）Theplaneflewtentimesashighasthekite那架飞机飞行高度是那

4、个风筝的十倍。（高出九倍）3. ”,times+the名词（如：size,height,weight,length,width,age等）of,”例如：Theearthis49timesthesizeofthemoon.地球的体积是月球的49倍。Thisriveristhreetimesthedepthofthatone.这条河是那条河的三倍深。Thisstreetisfourtimesthelengthofthatstreet.这条街是那条街的四倍长。Thishillisfourtimestheheightofthatsmallone这座山的高度是那座小山的四倍。（比那座小山高三倍）4. &

5、quot;,times+more名词+than,例如：Heearnsfivetimesmoremoneythanhedidtenyearsago.他现在挣的钱比十年前挣的多5倍。Therearetwicemorestudentsinourclassthanintheirs.1我们班的学生人数比他们班多两倍。5. ”,times+asmany或much）+名词+as,例如：We'veproducedtwiceasmuchcottonthisyearas（wedid）tenyearsago.今年我们生产的棉花比十年前多了一倍。（汉语中的多一倍实际上也指两倍一样多。）Hehasgotthre

6、etimesasmanybooksashissister.他拥有的书的数量是他妹妹的3倍。6. ",times+whatl句"例如：Thelengthoftheroadisfourtimeswhatitwasthreeyearsago.这条路的长度是三年前的4倍。Thepriceofthemeatistwicewhatitwaslastyear肉价是去年的两倍。7. “,times+uopn（或over）,”例如：Thesizeofthesunisamilliontimesoverthatoftheearth.太阳的体积比地球的体积大一百万倍。Heisthreetimesu

7、ponyourage.他的年龄是你的4倍（或：比你的年龄大3倍）。8. ",+by+,time则如2Comparedwithlastyear，ourcoaloutputhasincreasedbythreetimes.与去年相比，我们的煤产量增长了3倍。Hisspeedisfasterthanminebyfourtimes.他的速度比我的快4倍。9. ",times+comparedwith被比较对象”例如：Thenumberofthestudentsinourschoolhasincreasedfourtimescomparedwith1980.我们学校的学生人数比198

8、0年增加了4倍。10. ",times+thatof+比较对象”例如：InthisworkshoptheoutputofJulywasthreetimesthatofJanuary.这个车间七月份的产量是元月份的3倍。二、用分数、百分数表示倍数。例如：Theboxisone-thirdbiggerthanthatone.这个盒子比那个盒子大三分之一。Lastyeartheoutputvalueofindustrywas59percenthigherthanthatof1976.去年工业产值比1976年增长了59。MycommandofEnglishisnothalfsogoodasy

9、ours.我英语掌握得还不及你的一半儿好。三、用again（一倍），double（两倍），triple（三倍），fourfold（四倍）等词表示倍数。例如：MyAuntisasoldagainasIam姑姑的年龄比我大一倍。Thetop-brandclothesareoftensoldasdoublethenormalpricehere.这里名牌衣服的售价经常比正常的售价高一倍。Thenewworkproceduretripledtheoutput.新工艺使产量增加两倍。Theoutputofgrainincreasedfourfold.粮食产量增加了三倍。巩固练习1 .（2002上海春）Am

10、ericanseatvegetablesperpersontodayastheydidin1910.A.morethantwiceB.astwiceasmany2C.twiceasmanyasD.morethantwiceasmany2 .（1998上海）Paperproducedeveryyearistheworld'sproductionofvehicles.A.thethreeweightofB.threetimestheweightofC.asthreetimesheavyasD.threetimesasheavieras（heavie£改为原级）3. （1994上海

11、）WiththehelpoftheGermanexperts，thefactoryproducedcarsin1993astheyearbefore.A.astwicemanyB.asmanytwiceC.twiceasmanyD.twicemanyas4 .（MET1992）Thisshipmeasuresthatone.A. astwiceaslongB. astwicelongasC. twicelongasD. twiceaslongas5 .（MET1990）Afterthenewtechniquewasintroduced，thefactoryproducedtractorsin1

12、988astheyearbefore.A. astwicemanyB. asmanyasC. astwiceasmanyD. twiceasmanyKey：15DBCDD6 .ItisreportedthattheUnitedStatesusesenergyasthewholeofEurope.A.astwiceB.twicemuch3C.twicemuchasD.twiceasmuch答案是D7.Thehouserentisexpensive,IvegotabouthalfthespaceIhadathomeandI，mpayingher±海卷）A.asthreetimesmuchB.asmuchthreetimesC.muchasthreetimesD.threetimesasmuch【分析】答案选D。倍数threetimes要放在as的前面，后面