倍数的表达方法
1、倍数+比较级...
(1) 倍数as...as (意思是“A是B的几倍”。)
I am twice as old as he. 我的年纪是他的两倍。
He earns twice as much as he used to. 他比往常多赚二倍的钱。
(2) 倍数+比较级(意思是:A是B的几倍)
Line A is four times the length of line B. 线条A 是线条B 的四倍长。
I have five times the number of Tom’s books. 我有五倍于汤姆的书。
(3) 使用more...than 比较级的例句:
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。
(4) 比较级也可使用分数、小数等数字。
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 %。
(5) 在比较级前，还可以用over，more thant 等表示“比……倍还要多”。
It was over twice the distance of the earth from the sun. 那是地球到太阳的距离的两倍多。
He has more than three times my money. 他的钱是我的三倍还不止。
2、倍数+the 度量词of...
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. 这条河深度是那条河的三倍。
下边也可看作是这种句式的变化: 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4 倍。
3、其它表示法
(1) 英语中有些词表示特定的倍数，例如: again (一倍), twice, double (两倍), triple (三倍), fourfold (四倍) 等数。
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. 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。
(2) 使用by, compared with 等
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。
(使用by...) His speed is faster than mine by four times. 他的速度比我的快4 倍。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3 倍。
(使用compared with)
The production of integrated circuits has been increased to three times as compared with last year. 集成电路的产量比去年增加了两倍。
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轻了1/2。
I’ve paid five times the usual price for the stamp. 我出了5倍于往常的价格买这枚邮票。
The average income of the staff has been increased by 50 percent compared with last year. 职工的收入增加了50%.
The price of TVs are twofold down over these years. 近几年来，电视机的价格下降了两倍。
She spent half as much money as you. 她花掉的钱只有你花掉的一半。
一、数字增减的表示方法
(一)表示"增加"的基本句式
英语中常用来表示"增加"的单词和词组有:climb, go up, grow, increase, jump, rise, soar, up 等等。下面我们介绍用这些词来表示数字增加的具体句式:
1. (表示增加的)动词+ by + 数词(+名词)
In the coming 20 years, China’s population above the age of 16 will grow by 5.5 million annually on average. 在未来的20年内,中国16岁以上的人口平均每年将增加550万。
2. (表示增加的)动词+ up + to + 数词(+名词)
In 1999, the dairy company had an annual sale of nearly 400 million yuan, but its sales shot up to 2.1 billion in 2002.1999年,这家乳品公司年销售额近4亿元,到了2002年,年销售额激增到21亿元。
3. 百分数+ up,表示净增数
The grain output in this province is 20% up since 1990. 自从1990年以来,这个省的粮食产量净增了20％。4. 百分数+ (表示"增长、扩大"等含义的形容词)比较级+ than,表示净增的数量The retail sales of this year are expected to be six percent higher than last year. 今年零售额有望比去年增长6％。
(二)表示"减少"的基本句式
英语中常用来表示"减少"的单词有:cut, decrease, down, drop, fall, off, reduce等等。下面介绍用这些词来表示数量减少的具体句式:
1. (表示减少的)动词+ by + 数词(+名词)
Profits of the car factory fell by 62 percent to $340 million. 这家汽车工厂的利润下滑了62个百分点,至现在的3亿4千万美元。
The prime cost decreased by 60%. 主要成本减少了60％。Switching times of the new type transistor is shortened by two-fifths. 新型晶体管的开关时间缩短了五分之二。
2. (表示减少的)动词+ to + 数词(+名词),译为"减少到……"
The President is determined to reduce the deficit to $237 billion in five years. 总统决心在五年内将赤字减到2370亿美元。
3. 百分数+ off,表示净减数
The price of bread in the bakery is 10 percent off after 5 p.m. 下午五点后这家面包房的面包打九折出售。
4. 百分数+ (表示"减少、降低"等含义的形容词)比较级+ than,表示净减的数量
The retail sales of this year is six percent lower than last year. 今年零售额比去年降了6％。
英语中倍数的表达方式(1)
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)
A. more than twice B. as twice as many C. twice as many as 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(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 many B. as many twice C. twice as many 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 6. It is reported that the United States uses________energy as the whole of Europe. A.as twice B.twice much C.twice much as D.twice as much Key：1 －6 DBCDDD 7. 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 much B. as much three times C. much as three times D. 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 paid at home。 8. With the help of the German experts, the factory produced ________ cars in 1993 as the year before. (上海卷) A. as twice many B. as many as twice C. as twice as many D. twice as many 【分析】答案选D。倍数放在as之前。此题与全国卷曾考过的一题几乎一样： 9.The house rent is expensive. I've got about half the space I had at home and I'm paying _______ here. （2003 上海）
英语倍数表达法基本句型讲课讲稿
一. 表达倍数的三个基本句型 1.“A+be动词/谓语动词+倍数+as+形容词/副词原级+as+B”，表示“A正好是B 的多少倍”。例如： 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的十倍。 2. “A+be动词/谓语动词+倍数+形容词/副词比较级+than+B”，表示“A比B大（长、高、宽等）多少倍”。例如： 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）。 3. “A+be动词+倍数+the size/height/length/width, etc+of+B”，表示“A正好是B的多少倍”。例如： 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。除表达倍数的三个基本句型外，我们还要掌握其基本句型的7种变形。
英语中常用倍数表达法
英语倍数的表达方法 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。表示两倍的数用twice）1.“A + be + 倍数+ as + 形容词或副词原级+ as + B" This tree is three times as tall as that one. 这棵树是那棵树的三倍高。 His father is twice as old as he. 他父亲的年纪有他两倍大。 2.“A + be + 倍数+ 形容词或副词的比较级+ than + B ” The Yangtze River is almost twice longer than the Pearl River. 长江差不多比珠江长两倍。 The dictionary is exactly five times more expensive than that one. 这本字典比那本恰好贵5倍 3.“A + be + 倍数+ the + 计量名词+ of + B ” The newly broadened square is four times the size of the previous one. 新扩建的广场是未扩建时的四倍大。 计量名词：size大, length长, width宽, height高, depth深，weight重…倍数+the size of …… …倍数+the length of …… …倍数+the height of …… …倍数+the width of …… …倍数+the depth of …… …倍数+the weight of …… 4. “The + 计量名词+ of + A + be + 倍数+ that + of + B” The size of the newly broadened square is four times that of the previous one. 新扩建的广场为以前的四倍大。 5.“…times + that of+被比较对象” In this workshop the output of July was three times that of January. 这个车间7月份的产量是元月份的三倍。
倍数表达法
倍数表达法是历届高考的热点。当我们要表达甲是乙的几倍时，通常可使用以下句型： 1.倍数+as+形容词或副词的原级+as+其它。这种结构又常演变成下列两类：①倍数 +as+many+可数名词复数+as;②倍数+as+much+不可数名词+as。如： There are seven times as many people as I expected.是我预料的人数的七倍。 There is five times as much coffee in this glass as in that one.这个杯子里的咖啡是那个杯子里的五倍。 2.倍数+形容词（或副词）的比较级+ than+其它。如： The hall is five times bigger than our classroom.这个大厅的面积比我们教师大五倍。 3.倍数+the size/height/length/width.etc.+of+其它。如： This road is six times the length of that one.这条路是那条路的六倍长。 4.计量名词+of+名词+be+倍数+that+of+其它。如： The size of the newly broadened square is four times that of the previous one.新扩建的广场为以前的四倍大。 5.倍数+what从句。如： The production is now three times what it was ten years ago.现在的产量是十年前的三倍。 6.倍数+more+名词+than+其它。如： There are nine times more books in his bag than in yours. 他书包里的书比你书包里的书多九倍。
英语中倍数的表达方式
英语中“倍数”的常用表达方式 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：(前三种为主 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. 大 5 倍。 这个大厅比我们的教室 This rope is twice longer than that one ． This hall is five times bigger than our classroom ． The car runs twice faster than that truck ． 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。 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 ． 倍） 这块大石头的重量是那一块的三倍。（这块石头比那块重二 The plane flew ten times as high as the kite ． 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。
倍数的表达
倍数 A是B的几倍长（宽，高，大，重等）” ： 1.“A + be + 倍数+ as + 计量形容词原级+ as + B”。如： This tree is three times as tall as that one. His father is twice as old as he. 2.“A + be + 倍数+ 计量形容词比较级+ than + B ”。如： The dictionary is exactly five times more expensive than that one. 3.“A + be + 倍数+ the + 计量名词+ of + B ”。如： The newly broadened square id four times the size of the previous one. 4.“The + 计量名词+ of + A + be + 倍数+ that + of + B ”如： The size of the newly broadened square is four times that of the previous one. more than ... as ... as 结构∶more than＋倍数词＋as＋形容词／副词＋as 说明∶此句型意为“是…的几倍还不止”。“两倍”是twice，而三倍以上的“倍”，通常用times。 He is more than three times as rich as I. (=He is three times richer than I.) 他的财富是我的三倍还不止。 He studies more than three times as hard as I. 他用功的程度是我的三倍还不止。 I am more than twice as old as he. 我的年龄是他的两倍还不止。 He has collected more than three times as many stamps as I (have). 他搜集的邮票是我的三倍还不止。 ... times ...er than ... 结构∶倍数词＋形容词或副词比较级＋than… 说明∶此句型意为“比…大几倍”。“两倍”是twice，而三倍以上的“倍”，通常用times。 We now know that X-ray waves are 2,000 to 10,000 times shorter than light waves. 我们现在知道X光波比光波短二千到一万倍。 This street is four times shorter than that one. 这条街道比那条短四倍。 The mother elephant is one hundred times heavier than the baby elephant. 这只母象比小象重一百倍。 It is ten times louder than another. 它比另外一个的声音大十倍。 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. 我的年纪比他大两倍。 ... times the/my N ... 结构∶…倍数词＋the（或所有格）＋名词 说明∶此句型意为“是…的几倍”。<倍数词>与<名词>之间一定有the 或<所有格>。有时可改为“<倍数词>＋as＋<形容词>”。三倍以上的“倍”，通常用“times”。而“more than＋<倍数词>＋the（或<所有格>）＋<名词>”译为“是…的几倍还不止”。 It was over twice the distance of the earth from the sun. 那是地球到太阳的距离的两倍多。 Line A is four times the length of line B. 线条A 是线条B 的四倍长。 I have five times the number of Tom’s books. 我有五倍于汤姆的书。
英文倍数表达法
1. 在表示两倍时，我们常用twice或double。例如： This year we have produced twice as much corn as we did last year. 我们今年生产的玉米是去年的两倍。 She is double my age. 她的年龄是我的两倍。 2. 在表示三倍或三倍以上的倍数时，我们常用times表示，能够译为"是......的几倍"；"比......大/高/长......几倍"等等。 ①用"主语+谓语+...times + the size(或amount, length...)+ of +被比较的内容"表示。例如： The size of your room is five times the size of mine. 你房间的面积是我房间面积的五倍。 ②用"主语+谓语+...times + 形容词（副词）的比较级 + than +被比较的内容"表示。例如： Your bag is twice bigger than mine. 你的包比我的大两倍。 ③用"主语+谓语+...times + 形容词+ (n.) + as + 被比较的内容"表示。例如： Your book is three times as thick as mine. 你的书比我的书厚三倍。 ④用"主语+谓语+...times + what引导的从句"表示。例如： Cotton output is now ten times what it was ten years ago. 当前棉花的产量是十年前的十倍。 ⑤用"主语+谓语+...times + upon(或over)..."表示。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。 3. 可用"主语+谓语+...+ as + 形容词（副词） + again + as"表示。例如： Nine is as much again as three. 九是三的倍数。 4. 可用"主语+谓语+ 倍数（百分比）"表示。例如： This year we'll learn 20% more words from our texts than we did last year. 今年我们学习的单词比去年多20%。 5. 用"主语+谓语+ to + 数词"表示"增加到......数"。例如： The number of students in our school has increased to 2001. 我们学校的学生数已增加到两千零一人。 6. 用"主语+谓语+by+数词（百分比、倍数）等"表示。例如： The cost of the paper has reduced by 4%. 报纸的成本已减低了百分之四。
英语中倍数的表达法
The production of integrated circuits has been increased to three times as compared with last year。集成电路的产量比去年增加了两倍。 That can increase metabolic rates by two or three times。 那可使代谢率提高到原来的2倍或3倍（即提高1倍或2倍）。 The drain voltage has been increased by a factor of four.漏电压增加了3借（即增加到原来的4倍）。注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。（3）There is a n-fold increase/growth…应译为：增加n-倍（或增至n倍）。（⑧）这个句型还有其它一些形式，如： A record high increase in value of four times was reported.据报道,价值破记录地增长了3倍。 （4）double【增加1倍】，treble（增加2倍），quadruple（增加3倍）。(⑨)例如：The efficiency of the machines has been more than trebled or quadrupled．这些机器的效率已提高了2倍或3倍多。 (5)此外，英语中还有一种用again而不用倍数词来比较倍数的方法，如： A is as much（large，long，…）again as B.【= A is twice as much（large，long，…）as B.】（⑩）应译为：A比 B 多（大，长，……）1倍。 A is half as much（large，1ong，…）again as B.【= A is one and a half times as much（large，1ong，…）as B.】（11） 应译为:A比B多（大，长……）一半（即A是B的一倍半）。 2、倍数减少（1）A is n times as small（light，slow，…）as B.（12） A is n times smaller（lighter，slower，…）than B.（13） 以上两句均应译为：A的大小（重量，速度，……）是B的1/n[或A比B小（轻，慢，……）（n-1）/n]。例如： The hydrogen atom is near1y l6 times as light as the oxygen atom.氢原子的重量约为氧原子的1/16（即比氧原子约轻15／16）。 This sort of membrane is twice thinner than ordinary paper.这种薄膜比普通纸张要薄一半（即是普通纸厚度的1／2）。注：当相比的对象B很明显时，than/as B常被省去。 （2）decrease n times／n一fold（14） 以上三式均译为：减少到1／n[或：减少（n-1）／n]。decrease常被reduce，shorten，go／slow down等词替代。例如： Switching time of the new-type transistor is shortened 3 times。新型晶体管的开关时间缩短了1／3（即缩短到2／3）。 When the voltage is stepped up by ten times，the strength of the current is stepped down by ten times。电压升高9倍，电流强度便降低9／10（即90％）。 The equipment reduced the error probability by a factor of 5.该设备误差概率降低了4/5。 英语在表述或比较倍数时，无论使用什么句型（除了不含倍数词的again句型外）都包括基础倍数在内，因此都不是净增或净减n倍，而是净增或净减n-1倍。
倍数表达法及练习题
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. 这根绳子是那根绳子的两倍长（比那根绳子长一倍）。 This hall is five times bigger than our classroom. 这个大厅比我们的教室大四倍（是我们教室的五倍）。 The car runs twice faster than that truck. 这辆小车的速度比那辆卡车快一倍（是那辆卡车的两倍）。 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 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四倍。 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。 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 as 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：
倍数的表达方式先说倍数,再说是谁的……,比谁
倍数的表达方式：先说“倍数”，再说“是谁的……”，“比谁的…….” I am twice as old as he. He earns twice as much as he used to. She studies three times as hard as I. The line is four times as long as that one. My command of English is not half so/as good as yours. We have produced twice as much cotton this year as ten years ago. The street is four times shorter than that one. The output of cars in 2008 was five times greater than that of 2000. The rope is four times longer than that one. The college is twice what it was 5 years ago. The output of cars in 2008 was six times that of 2000. 注意: 使用more…than比较级的例句 He earns five times more money than he did ten years ago. There are twice more students in our class than in theirs. 在比较级前,还可以用over, more than等表示”比…….倍还要多”。例如: Americans eat more than twice as many vegetables per person today as they did in 1910. He has more than three times my money. with的复合结构 1.with + n. +现在分词 They started working with the machine running. With the boy leading the way, we found her house easily. With time going by(=As time went by) ,he likes English more and more. I could’t do my homework with all that noise going on. 2.with +n. +过去分词 He is used to sleeping with the window shut. With his work done ,he went out playing basketball. 3.with +n. +不定式 With a lot of work to do, Tom can’t go out to play.
初中英语、英语倍数表达法
英语倍数表达法 袁征 英语表示倍数增减或倍数对比的句型多种多样，其中有一些很容易译错——其主要原因在于：英汉两语在表述或对比倍数方面存在着语言与思维差异。现将常 用的英语倍数句型及其正确译法归纳如下： 倍数增加 (一) A is n times as great（long，much，…）as B.（①） A is n times greater （longer，more，…）than B.（②） A is n times the size （length，amount，…）of B.(③) 以上三句都应译为；A的大小（长度，数量，……）是B的n倍[或A比B大（长，多，……）n-1倍]. This book is three times as long as （three times longer than，three times the length of ）that one. 这本书的篇幅是那本书的3倍（即长两倍）。 注：当相比的对象B很明显时，than（as，of）B常被省去。 （二）increase to n times（④） increase n times／n-fold（⑤） increase by n times（⑥） increase by a factor of n（⑦） 以上四式均应译为：增加到n倍（或：增加n-1倍）。 The production of integrated circuits has been increased to three times as compared with last year. 集成电路的产量比去年增加了两倍。 The output of chemical fertilizer has been raised five times as against l986． 化肥产量比1986年增加了4倍。 That can increase metabolic rates by two or three times. 那可使代谢率提高到原来的2倍或3倍（即提高1倍或2倍）。 The drain voltage has been increased by a factor of four. 漏电压增加了3借（即增加到原来的4倍）。 注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 （三）There is a n-fold increase/growth…（⑧） 应译为：增加n-倍（或增至n倍）。这个句型还有其它一些形式： A record high increase in value of four times was reported. 据报道,价值破记录地增长了3倍。 （四）double (增加1倍），treble（增加2倍），quadruple（增加3倍）。(⑨)
比较级和倍数表达
Ⅰ、no less than不亚于，不亚于，竟达……之多 1)The audience was no less than five thousand. 听众有五千人之多。 2)That hotel probably costs no less than 20 dollars a night. 那间旅馆的住宿费大约要20元一晚呢。 3) He is no less a person than a minister他的身分不亚于部长。 not less than不比……差，至少, 至少和…一样 1) I'll stay here not less than three days. 我将待在这里至少三天。 2) She is not less beautiful than Mary她至少和玛丽一样美丽。 no more than同样不；仅仅，只有 1)He is no more than a worker. 他仅仅是个工人。 2)It's no more than a misunderstanding. 这只是个误会。 3)It is no more than ten minutes' walk from the station. 由车站走到这里只有十分钟的路程。 not more than不比……更，不如；至多 1）He is not more diligent than you are.他不象你那样勤奋。（重点在 you are diligent 。他也勤奋，但不如你勤奋。） 2)I'll stay here not more than three days. 我将待在这里最多不超过三天。 ⅡAs well as 作为习语用作介词时，as well as的涵义是“还有”、“不但…而且…”。值得注意的是，在A as well as B的结构里，语意的重点在 A，不在 B。因此，“He can speak Spanish as well as English．”的译文应该是：“他不但会说英语，而且会讲西班牙语”，决不能译作：“他不但会说西班牙语，而且会讲英语”。如果这样翻译，就是本末倒置了。as well as和not only… but also…同义，但前者的语意重点和后者的语意重点恰好颠倒。
英语中倍数的表达法
英语中倍数的表达方式 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：(前三种为主) 1. “… times ＋形容词/ 副词的比较级＋than …”例如： This rope is twice longer than that one．This hall is five times bigger than our classroom． 2. “… times +as + 形容词/ 副词的原级＋as …”例如： 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。 This big stone is three times as heavy as that one． 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） The plane flew ten times as high as the kite．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。 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。（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： 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 + upon （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 upon 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. 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。 ［巩固练习］ 1. 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 D. more than twice as many
(完整版)倍数表达法和比较等级
一倍数表达法是历届高考的热点。当我们要表达甲是乙的几倍时，通常可使用以下句型：1. 倍数+ as + 形容词或副词的原级+ as + 其他。 这种结构又常演变成下列两类： ①倍数+ as + many + 可数名词复数+ as； ②倍数+ as +much + 不可数名词+ as。如： There are seven times as many people as I expected.是我预料的人数的七倍。 There is five times as much coffee in this glass as in that one. 这个杯子里的咖啡是那个杯子里的五倍。 2. 倍数+ 形容词（或副词）的比较级+ than + 其他。如： The hall is five times bigger than our classroom. 这个大厅的面积比我们教室大五倍。 3. 倍数+ the size / height / length / width. etc. + of + 其他。如： This road is six times the length of that one. 这条路是那条路的六倍长。 4. 计量名词+ of + 名词+ be +倍数+ that + of + 其他。如： The size of the newly broadened square is four times that of the previous one. 新扩建的广场为以前的四倍大。 5. 倍数+what从句。如： The production is now three times what it was ten years ago.现在的产量是十年前的三倍。 6. 倍数+ more + 名词+ than +其他。如： There are nine times more books in his bag than in yours. 他书包里的书比你书包里的书多九倍。 7. 其他表达。如： She’s twice/ double my age. 她的年龄是我的两倍。 The average income of the staff has been increased by 50 percent compared with last year. 与去年相比，该单位职工的收入已增加了50%。 He runs faster than me by three times. 他跑得比我快三倍。 【考查方向】 1)倍数在句中的位置一般放在第一个as前面或比较级前面或名词前面。 2)用times表示倍数时，一般只限于表示包括基数在内的三倍或三倍以上的数。表示两倍可以用twice或double，一倍用once。 二、重要的比较结构用法归纳 1. as…as 结构。该结构的意思是“与…一样”，其间应接形容词原级，不能用比较级或最高级。如： He is as tall as his father. 他与他父亲一样高。 He is as busy as before. 他还是像以前那样忙。 在否定句中第一个as也可换成so，其意为“不如”： He is not as [so] tall as his father. 他不如他父亲高。 He is not as [so] busy as before. 他不像以前那样忙。 2. more and more与the more…, the more…：前者表示“越来越……”，后者表示“越……，越……”。如： Our country is getting more and more powerful. 我们国家越来越强大。 The more we get together, the happier we will be. 人聚得越多，我们越快活。 3. more than 与less than：前者“(指数量)多于”、“不只是”、“非常”等，后者表示“少于”、“比……少”。如：