倍数的表达法及相关练习.docx

英语中倍数的表达法及相关练习 (2011-11-16 16:51:24)标签：高考英语杂谈分类：英语“倍数”的表达方式总结2011-11-15有这样一道题：The house rent is expensive. Ive got about half the space I had at home and Im paying _ here.（2003上海）A. as three times muchB. as much three timesC. much as three timesD. three times as much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。下面老师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，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：LineABis three times longer than line CD.线段AB是（线段）CD的三倍长。This hall is five times bigger than our classroom.这个大厅比我们的教室大5倍。ThisropeistwicelongerthanthatoneThishallisfivetimesbiggerthanourclassroomThecarrunstwicefasterthanthattruck2. “ times +as +形容词/副词的原级as ”例如：This table is three times as long as that one.这张桌子是那张桌子的三倍长。This dictionary is five times as thick as the one you borrowed from the library.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：The earth is 49 times the size of the moon.地球的体积是月球的49倍。This river is three times the depth of that one.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. “ times + more名词than ”例如：He earns five times more money than he did ten years ago.他现在挣的钱比十年前挣的多5倍。There are twice more students in our class than in theirs.我们班的学生人数比他们班多两倍。5.“times +as many（或much）名词as”例如：Weve produced twice as much cotton this year as（we did）ten years ago.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。）He has got three times as many books as his sister.他拥有的书的数量是他妹妹的3倍。6.“times + what从句”例如：The length of the road is four times what it was three years ago.这条路的长度是三年前的4倍。The price of the meat is twice what it was last year.肉价是去年的两倍。7.“times + up on（或over）”例如：The size of the sun is a million times over that of the earth.太阳的体积比地球的体积大一百万倍。He is three times up on your age.他的年龄是你的4倍（或：比你的年龄大3倍）。8.“+by +times”例如：Compared with last year，our coal output has increased by three times.与去年相比，我们的煤产量增长了3倍。His speed is faster than mine by four times.他的速度比我的快4倍。9.“times + compared with被比较对象”例如：The number of the students in our school has increased four times compared with 1980.我们学校的学生人数比1980年增加了4倍。10.“times + that of +被比较对象”例如：In this workshop the output of July was three times that of January.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：The box is one-third bigger than that one.这个盒子比那个盒子大三分之一。Last year the output value of industry was 59 percent higher than that of 1976.去年工业产值比1976年增长了59。My command of English is not half so good as yours.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：My Aunt is as old again as I am.我姑姑的年龄比我大一倍。The top-brand clothes are often sold as double the normal price here.这里名牌衣服的售价经常比正常的售价高一倍。The new work procedure tripled the output.新工艺使产量增加两倍。The output of grain increased fourfold.粮食产量增加了三倍。巩固练习1.（2002上海春）Americans eat _ vegetables per person today as they did in 1910.A. more than twiceB. as twice as manyC. twice as many asD.more thantwice as many2.（1998上海）Paperproduced every year is _ the worldsproductionofvehicles.A. the three weight ofB. three times the weight ofC. as three times heavy asD. three times as heavier as(heavier应改为原级)3.（1994上海）With the help of the German experts，the factory produced _ cars in 1993 as the year before.A. as twice manyB. as many twiceC. twice as manyD. twice many as4.（MET 1992）This shipmeasures _ that one.A. as twice as longB. as twice long asC. twice long asD. twice as long as5.（MET 1990）After the new technique was introduced，the factory produced _ tractors in 1988 as the year before.A. as twice manyB. as many asC. as twice as manyD. twice as manyKey：15 DBCDD6. It is reported that the United States uses_energy as the whole of Europe.A.as twiceB.twice muchC.twice much asD.twice as much答案是D7. The house rent is expensive, Ive got about half the space I had at home and Im paying _ here. (上海卷)A. as three times muchB. as much three timesC. much as three timesD. three times as much【分析】答案选D。倍数three times要放在as的前面，后面省略as I pa