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1、精选优质文档-倾情为你奉上英语倍数表达法 作者：佚名|转贴自：本站原创|点击数：12|更新时间：2010-4-11|文章录入： 倍数表达法是高中英语教学的重点，也是历届高考的热点。当我们要表达甲是乙的几倍时，通常用下面三个句型来表示： 1. “A+倍数+形容词或副词的比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。如： This rope is twice longer than that one.这根绳子比那根绳子长两倍（是那根绳子三倍长）。 This hall is five times bigger than our classroom.这个大厅比我们的教室大五倍(是我们
2、教室的六倍大)。 The car runs twice faster than that truck.这辆小车的速度比那辆卡车快两倍（是那辆卡车的三倍快）。 2.“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好是B的多少倍”。如： Asia is four times as large as Europe.亚洲的面积是欧洲的四倍。 This big stone is three times as heavy as that one.这块大石头的重量是那块的三倍。 The plane flew ten times as high as the kite.那架飞机的飞行高度是那只风筝
3、的十倍。 3. “A+倍数+the size/height/length/width, etc+of+B”，表示“A正好是B的多少倍”。如： This street is four times the length of that one.这条街是那条街的四倍长。 This hill is four times the height of that small one.这座山的高度是那座小山的四倍。 除掌握倍数表达的三个常规句型外，我们更要注意的是其常规句型的变形及其特殊规律。 一.常规句型的变形 1. “ . times+more+名词（可数或不可数）+than+被比对象”。如： There
4、 are five times more books in our library than in yours.我们图书馆里的书比你们图书馆多五倍多。 We have produced twice more grain this year than we did last year.我们今年生产的粮食是去年的两倍多。 2. “ . times as many/much+名词+as+被比对象”。如： There is four times as much water in this pot as in that one.这个壶里装的水是那个壶里的四倍。 There are six times a
5、s many students as we expected.学生数量是我们预期的六倍。 3.“ . times+over+被比对象”。如： The grain output in that village is twice over that of 2002.那个村的粮食产量是2002年的两倍多。 4. “ . times+that+of+被比对象 ”。如： In this workshop, the output of July was 4.5 times that of January.这个车间7月份的产量是1月份的4.5倍。 5. “.times+compared with+被比对象”
6、。如： The number of the students in our school has increased 4 times compared with 1980.我们学校的学生人数比1980年增加了四倍。 6. “.times+what+从句”。如： The production is now three times what it was ten years ago.现在的产量比十年前增加了三倍。 二.倍数/百分数（percent）+compared with/up on +被比对象。如： Our factory s output of TV sets in the first s
7、ix months of this year was 10% up compared with last year.今年头六个月我们厂电视机的产量与去年相比增加了10%。 The industrial output of last year in our factory was 35% up on that of 2001.我们厂去年的工业产量比2001年增加了35%。 三.用double表示倍数 1. double用作形容词，表示“两倍的”。如： The production is now double what it was ten years ago.现在的产量是十年前的两倍。 2. d
8、ouble用作动词，表示“是的两倍。如： The output has been doubled in the past six years.在过去六年中产量已经翻了一番。 This brought a steady rise in the grain yield. In 2002 it nearly doubled that of 1980.这使粮食产量不断增长，到2002年产量已经比1980年将近翻了两番英语中“倍数”的常用表达方式一、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：1. “ times 形容词 / 副词的比
9、较级 than ”例如：Line AB is 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。2. “ 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
10、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。3. “ times + the + 名词（如： size， height， weight， length， width 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。4. “ times + more 名词 than ”例如：He earns five times more money than h
11、e 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 a
12、s 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
13、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 i
14、n our school has increased four times compared with 1980.我们学校的学生人数比 1980 年增加了 3 倍。10. “ times + that of + 被比较对象”例如：In this workshop the output of July was 3.5 times that of January.这个车间七月份的产量是元月份的 3.5 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 va
15、lue 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
16、 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 than tw
17、ice as many2. （ 1998 上海） Paper produced every year is _ the worlds production of vehicles.A. the three weight ofB. three times the weight ofC. as three times heavy asD. three times as heavier as3. （ 1994 上海） With the help of the German experts， the factory produced _ cars in 1993 as the year before.
18、A. as twice manyB. as many twiceC. twice as manyD. twice many as4. （ MET 1992 ） This ship measures _ 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： 1 5 DBCDD专心-专注-专业