英语中倍数的表达法及相关练习

1、最新 料推荐英语中 “倍数 ”的表达方式有 一道 ：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 的正确答案 d . 然本 是在考 倍数的表达法。倍数表达法是高中英 教学的重点，也是 年的高考 点之一。掌握倍数的表达法 于同学 学好英 具有重要意 。下面 倍数的

2、几种表达法作一 ：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 主 )1. “ times形容 / 副 的比 than”例如：line ab is three times longer than line cd. 段 ab 是（ 段）cd 的三倍 。this hall is five times bigger than our classroom. 个大 比我 的教室大5 倍。this rope is twice longer than that onethis hall is five times bigg

3、er than our classroomthe car runs twice faster than that truck2. “ times +as + 形容 / 副 的原 as ”例如：this table is three times as long as that one. 桌子是那 桌子的三倍 。this dictionary is five times as thick as the one you borrowed from the library. 本 典的厚度是你从 借的那本（厚度）的5 倍。asia is four times as large as europe1最新

4、料推荐 洲的面 是欧洲的四倍。this big stone is three times as heavy as that one 大石 的重量是那一 的三倍。（ 石 比那 重二倍）the plane flew ten times as high as the kite那架 机 行高度是那个 筝的十倍。（高出九倍）3.“ times + the + 名 （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 是月球的49 倍。this river

5、 is three times the depth of that one. 条河是那条河的三倍深。this street is four times the length of that street. 条街是那条街的四倍 。this hill is four times the height of that small one 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 than”例如：he earns five times more money than he did ten years ago.他 在 的 比十年前 的多5 倍。there ar

6、e twice more students in our class than in theirs.我 班的学生人数比他 班多两倍。5.“ times +as many （或much）名 as ”例如：weve produced twice as much cotton this year as（ we did） ten years ago.今年我 生 的棉花比十年前多了一倍。（ 中的多一倍 上也指两倍一 多。）he has got three times as many books as his sister.他 有的 的数量是他妹妹的3 倍。6.“ times + what 从句 ”例如：

7、the length of the road is four times what it was three years ago. 条路的 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。2最新 料推荐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 比地球的体 大一百万倍。he is three times up on your age.他的年 是你

8、的4 倍（或：比你的年 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 的煤 量增 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 象”例如：the number of the students in our school has increased four times compared with 1980

9、.我 学校的学生人数比1980年增加了4 倍。10.“ times + that of + 被比 象 ”例如：in this workshop the output of july was three times that of january. 个 七月份的 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. 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 比1

10、976年增 了59 。my command of english is not half so good as yours.我英 掌握得 不及你的一半儿好。三、用again（一倍），double（两倍），triple（三倍），fourfold（四倍）等 表示倍数。例如：3最新 料推荐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 t

11、ripled 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 twice as many2.（ 1998 上海） paper produced every year is _ the worlds pr

12、oduction of vehicles.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 asthe year before.a. as twice manyb. as many twicec . twice as manyd. tw

13、ice 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 in1988 as the year before.a. as twice many4最新 料推荐b. as many asc. as twice as manyd

14、. twice as manykey ： 1 5 dbcdd6. it is reported that the united states uses_energy as the whole of europe. a.as twiceb.twice much c.twice much as d.twice as much答案是 d7. the house rent is expensive, i ve got about half the space i had at home and i m 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