英语中表示倍数的常见句型

英语中表示倍数的常见句型乘数表达法是高中英语教学的重点，也是历代高考的热点。表达甲是乙的多少倍时，通常使用以下三种句型。I .“复数形容词(或副词)的比较than子句”表示a比b大多少(长度、高度、宽度等)This rope is twist longer than one。这根绳子是那根绳子的三倍(比那根长两倍)。the car runs twice faster than that truck .这辆车比那辆卡车快两倍(那辆卡车的三倍)。this street is four times shorter than that one。这条街比那条短四倍。the mother elephant is one hundred times heavier than the baby elephant。这只母象比大象重100倍。It is ten times louder than another。比其他声音大10倍。this street is three times wider than that one .这条街比那条街宽三倍。I am twice older than he。我比他大两倍。The box is one-third bigger than one。这个箱子比那个箱子大三分之一。二、“形容词或副词的原as子句”表示a正好是b的几倍。Asia is four times as large as europe。亚洲地区是欧洲的两倍。the plane flexon times as high as the kite。这架飞机的飞行高度是风筝的10倍(9倍以上)I am twice as old as he .我是他年龄的两倍。she stuies three times as hard as I .她努力学习了三倍左右。this line is four times as long as that one .这条线是那条线的四倍长。An ordinary train，approaching the station，can be twice as loud as the loudest jet。一般列车进站时发出的声音可能是喷气式飞机的两倍。我的command of English is not half so good as yours。我的英语还不到你的一半。第三，“尺寸/高度/长度/宽度，etc .of”表示a正好是b的几倍。this street is four times the length of that one .这条街是那条街的四倍。this hill is four times the height of that smallone .这座山的高度是那座山的4倍(比那座山高3倍)line a is four times the length of line b . line a是线b的4倍长。I have five times the number of Tom s books .我有汤姆的5倍的书。the river is ten times the length of the tam sui river。这条河的长度是淡水河的10倍。it was over twence the distance of the earth from the sun。是地球到太阳距离的两倍多。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 .这条河的深度是那条河的三倍。下面也可以看作是这个句型的变化：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四倍。the price of the meat is twist what it was last year。肉类价格是去年的两倍。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。in this workshop the output of July was 3.5 times that of January .7月的产量是元月份的3.5倍。the principal advantage of the products is a two-fold reduction in weight。这些产品的主要优点是重量减少了两倍。I ve paid five times the usual price for the stamp。我出的这张邮票比平时的价格多5倍。the average income of the staff has been increassed by 50 percent compared with last year。员工收入增加了50%。a survey shows that coverage rates have increassed by from two-fold to four-fold .调查显示，复盖范围从2倍增加到4倍。除了掌握三个一般的句型外，我们还要更加注意其正规句型的变形及其特殊规律。四、现有排水句型的变体(共7个)a)倍数times more名词(可数，不能数)than .there are five times more books in our library than in yours。我们图书馆的书比你们图书馆的书多5倍。we have produced twence more grain this year than we did last year。我们今年生产了两倍于去年的粮食。he earns five times more money than he did ten years ago。他现在挣的钱比10年前赚的多5倍以上。there are twence more students in our class than in theirs。我们班的学生人数比他们的班多一倍多。2)倍数times as many/much名词as.asthere is four times as much water in this pot as in that one。there are six times as many students as we expected。He earns twice as much as he used to他赚的钱比平时多两倍。weve producted twice as much cotton this year as ten years ago。今年棉花比10年前多了两倍。he has got three times as many books as his sister。他拥有的书的数量是他妹妹的三倍。shespent half as much money as you。她花的钱只有你花的一半。如有必要，排水沟前的黄貂鱼，更than等说：是的.也可以指“还需要几倍”。例如：China is more than three times as rich as it used to .中国的财富是过去的3倍以上。I am more than twice as old as he。我的年龄是他的两倍多。he studies more than three times as hard as I .他学习比我努力3倍以上。he has collected more than three times as many stamps as I .他收集的邮票是我的三倍多。3)倍数timestaver比对象“增加”.船”the price of TVs are two fold down over these years。最近几年，电视价格下降了一倍。(4) times that of比对象显示“是.船”的意思the grain output in that vilage is twist over that of 2002。last year the output value of industry was 59 percent higher that of 1976。去年工业产值比1976年增长了59%。In this workshop，the output of July was 4.5 times that of January。5) times compared with比较对象.by乘数词the number of the students in our school has increated 4 timesCompared with 1980。我们学校的学生人数比1980年增加了3倍。Compared with last year，our cool output has increated by three times。我们的煤产量比去年增加了三倍。(使用by.）the number of the students in our school has increated four times compared with 1980。我们学校的学生人数比1980年增加了3倍。(使用compared with)他的speed is faster than mine by four times。他的速度比我快四倍。the production of steel has been increassed to three times compared with last year。钢的生产量是去年的两倍多。6)英语中有一些词表示特定倍数，如again(两倍)、two-fold(前)、twist(后)、double(两倍)、triple(三倍)和fourfold(四倍)我姑姑比我大两倍。She has as much again experience as i .她的经验是我的两倍。the top-brand clothes are often sold