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英语中倍数的表达方式


英语中“倍数”的常用表达方式
有这样一道高考题: ( 2003 上海) The house rent is expensive. I've got about half the space I had at home and I'm paying _______ here. A. as three times much B. as much three times C. much as three times D. 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。掌握倍数的表达法对于同学们学好英 语具有重要意义。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,一般用 twice )。 其句式有: 1. “… times +形容词 / 副词的比较级+ 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 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。
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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: We've 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。

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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 twice B. as twice as many C. twice as many as
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D. more than twice as many 2. ( 1998 上海) Paper produced every year is _______ the world's production of vehicles. A. the three weight of B. three times the weight of C. as three times heavy as D. three times as heavier as 3. ( 1994 上海) With the help of the German experts, the factory produced ______ cars in 1993 as the year before. A. as twice many C. twice as many B. as many twice D. twice many as

4. ( MET 1992 ) This ship measures ________ that one. A. as twice as long B. as twice long as C. twice long as D. twice as long as 5. ( MET 1990 ) After the new technique was introduced, the factory produced _______ tractors in 1988 as the year before. A. as twice many B. as many as C. as twice as many D. twice as many Key: 1 - 5 DBCDD

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