倍数表达法归纳

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倍数表达法

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。

7.其它表达。

如:She“s twice/double my age.她的年龄是我的两倍。

英语中的倍数表达法归(配练习)

英语中的倍数表达法归(配练习)

英语中的倍数表达法归纳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:1) There are seven times as many people as I expected. 是我预料的人数的七倍。

2) 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。

3) Asia is large Europe. 亚洲的面积是欧洲的四倍。

4) This big stone is three times that one. 这块大石头的重量是那块的三倍。

5) The plane flew the kite. 那架飞机的飞行高度是那只风筝的十倍。

2.倍数+ 形容词(或副词)的比较级+ than + 其他。

如:1) The hall is five times bigger than our classroom. 这个大厅的面积比我们教室大五倍。

2) This rope is that one. 这根绳子是那根绳子的两倍长(比那根绳子长一倍)。

3) The car runs 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)。

4) The Yantze River is almost the Pearl River. 长江差不多比珠江长两倍。

3.倍数+ the size / height / length / width. etc. + of + 其他。

如:1) This road is six times the length of that one. 这条路是那条路的六倍长。

2) This hill is of that small one. 这座山的高度是那座山的四倍。

倍数表示法

倍数表示法

英语倍数表示法关于英语倍数表示法的文章很多,而且列举了一大堆的句型,让人看了眼花缭乱。

在仔细地分析了各种句式后,实际上,英语倍数最大的特点是:先说“倍数”,再说“是谁的……”,“比谁的……”等。

概括起来,英语倍数表示主要就三种句式。

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。

An ordinary subway train, approaching the station, can be twice as loud as the loudest jet. 发出的声音可能是喷射机的两倍。

She studies three times as hard as I. 她用功的程度是我的三倍。

This line is four times as long as that one. 这条线是那条线的四倍长。

We've produced twice as much cotton this year as ten years ago. 今年的棉花比十年前多了一倍。

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。

在比较级前,还可以用over,more thant 等表示“比……倍还要多”。

例如:He is more than three times as rich as I. 他的财富是我的三倍还不止。

I am more than twice as old as he. 我的年龄是他的两倍还不止。

He studies more than three times as hard as I. 他用功的程度是我的三倍还不止。

He has collected more than three times as many stamps as I .他搜集的邮票是我的三倍还不止。

倍数的翻译

倍数的翻译

• 4 The newly-built bridge is twice the last year. . • A. 这座新建的桥比去年建的那座长两倍 • B. 这座去年建的桥是那座新建的一倍。 这座去年建的桥是那座新建的一倍。 • C. 这座新建的桥比那座长一倍。 这座新建的桥比那座长一倍。 • D. 这座新建的桥比去年建的那座长一倍。 这座新建的桥比去年建的那座长一倍。 • 最佳答案:D 最佳答案:
• 2. China has nine times the population of Japan. • A. 中国的人口比日本多九倍。 中国的人口比日本多九倍。 • B. 中国的人口比日本多八倍。 中国的人口比日本多八倍。 • C. 中国的人口是日本的八倍。 中国的人口是日本的八倍。 • D. 日本的人口比中国少六倍。 日本的人口比中国少六倍。 • 最佳答案:B 最佳答案:
3. 在翻译倍数减少的句型时要将倍数换成分 不能说“减少了……倍”,一般翻译 数,不能说“减少了 倍 为“是……的1/X”或“减少到 的 或 减少到1/X”或“减 或 少了(X–1)/X”等 少了(X–1)/X”等。 • 如:This box is four times as light as that one. • 这个箱子的重量是那个箱子的四分之一。 这个箱子的重量是那个箱子的四分之一。 • /这个箱子比那个箱子轻四分之三。 这个箱子比那个箱子轻四分之三。 这个箱子比那个箱子轻四分之三
• 3 This kind of glass is three times as thin as ordinary glass. • A. 这种玻璃的厚度只有普通玻璃的三分之 一。 • B. 这种玻璃的厚度是普通玻璃的三倍。 这种玻璃的厚度是普通玻璃的三倍。 • C. 这种玻璃比普通玻璃薄三分之一倍。 这种玻璃比普通玻璃薄三分之一倍。 • D. 这种玻璃比只有普通玻璃厚三倍。 这种玻璃比只有普通玻璃厚三倍。 • 最佳答案:A 最佳答案:

用集合法表示2的倍数-概述说明以及解释

用集合法表示2的倍数-概述说明以及解释

用集合法表示2的倍数-概述说明以及解释1.引言1.1 概述:2的倍数在数学中是一个非常基础且常见的概念。

理解2的倍数不仅有助于我们深入了解数学知识,还可以在日常生活中应用到各种场景中。

通过集合法,我们可以更直观地描述和表示2的倍数。

本文将介绍什么是集合法以及如何用集合法表示2的倍数,同时探讨集合法在数学中的应用,希望可以帮助读者更深入地理解和运用2的倍数这一概念。

1.2 文章结构本文共分为三个部分:引言、正文和结论。

在引言部分,将介绍本文的概述、文章结构和目的,为读者提供对整篇文章的整体认识。

在正文部分,将首先介绍什么是集合法,然后详细阐述如何用集合法表示2的倍数,最后探讨集合法在数学中的应用,以便读者能够全面了解和掌握这一概念。

在结论部分,将对整篇文章进行总结,分析集合法对理解2的倍数的帮助,并展望未来集合法在数学领域的发展前景,为读者留下深刻印象和启发。

1.3 目的本文的目的在于探讨如何用集合法来表示2的倍数,并且探讨集合法在数学中的实际应用。

通过这篇文章,读者可以更加深入地了解集合法的概念和用途,同时也能够更加清晰地理解2的倍数的概念。

我们希望通过这篇文章的阐述,能够帮助读者更好地理解数学中的抽象概念,并且启发读者对数学思维的思考和探索。

通过本文的阐述,读者可以更好地认识到数学的奥妙所在,同时也能够提高自己的数学思维能力,为进一步学习数学打下坚实的基础。

2.正文2.1 什么是集合法在数学中,集合法是一种表示集合的方式,它通过将元素按照某种规则或性质进行分类,从而形成一个特定的集合。

在集合法中,我们可以通过一些特定的规则或条件来描述一个集合中的元素,使得我们能够清晰明了地理解这个集合。

集合法通常使用集合符号“{}”来表示一个集合,其中包含一系列元素。

例如,我们可以用集合法表示所有偶数的集合,即{2, 4, 6, 8, ...}。

在数学中,集合法的应用十分广泛,可以用来描述各种不同类型的集合,如自然数集合、整数集合、有理数集合等。

倍数的几种表达法

倍数的几种表达法

• 7. “… times + up on (或 over )…” • 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 ” • 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。
• • • •Байду номын сангаас
二、用分数、百分数表示倍数。 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。
• 3. “… times + the + 名词(如: size, height, weight, length, width 等)+ 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. • 这条河是那条河的三倍深。 • 4. “… times + more +名词+ than …” • 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。

英语中如何表达倍数

英语中如何表达倍数

英语中如何表达倍数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: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与去年相比,该单位职工的收入已增加了50%。

英语数词总结-全

英语数词总结-全

英语数词总结数词是表示数目或顺序的词。

数词有两种:基数词和序数词。

英语数词的概念和用法似乎与汉语没什么差别,但是你可千万不要小瞧数词。

在英语中,数词有些独特的读法、写法和用法。

要想准确地使用数词,还真要下一番工夫呢。

现在我们就进入数词世界吧!数词是中考常见考点之一。

中考中对数词部分的考查往往侧重于以下几个方面:基数词、序数词、分数、小数、百分数、倍数的表达;日期、时刻、年代、年龄的表示法;表数目的名词(如hundred,thousand,million等)的有关用法,以及“许多”的表示法。

平时备考时,考生应将基数词和序数词正确表示形式加以对比、归纳、总结、熟练掌握;牢记常考数词的用法。

•数词解说表示数目多少或顺序先后的词叫数词。

数词分为基数词、序数词。

基数词表示数目或数量的多少,如:one,two,three,20%,5.25等。

序数词表示顺序和等级,如:first,fifth,ninth,twentieth,等。

数词在句中可作主语、宾语、表语、定语和同位语等成分。

基数词•基数词的构成基本基数词共31个,其中100以下的27个,100以上的4个。

如下表所示:•100以下的基本基数词1-101one2 two3 three4 four5 five6 six7 seven8 eight9 nine10 ten 11——1911 eleven12 twelve13 thirteen14 fourteen15 fifteen16 sixteen17 seventeen18 eighteen19 nineteen20——9020 twenty30 thirty40 forty50 fifty60 sixty70 seventy80 eighty90 ninety100以上的基本基数词100 a/one hundred1000 a/one thousand1 000 000 a/one million1 000 000 000 a/one billion(美)a/one thousandmillion(英)①13-19数字的表达13-19数字皆以teen/-ti:n/结尾,其中,fourteen,six -teen, seventeen,eighteen和nineteen分别由four,six,seven,eight加后缀-teen变成,eighteen中只保留一个t。

倍数表达法

倍数表达法

答:在写作过程中或在口头表达中,有时要谈到“倍数”问题,现将其表达法作一归纳。

1.用形容词表示甲是乙的几倍时,用下面三个句型,用副词表示则一般只用前两个句型。

(1)……倍数+形容词(或副词)的比较级+thanThis rope is twice longer than that one.这根绳的长度是那根绳的三倍。

(比那根绳长二倍)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)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)(2)……倍数+as+形容词(或much)或副词+asAsia 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)……倍数+the size(length,height…)ofThis street is four times the length of that street.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。

(比那座小山高三倍)也可用:The height of this hill is four times that of that small one.2.要用名词表示“量”的倍数时,则用以下两个句型:(1)……倍数+more+名词(可数,不可数)+thanThere are four times more books in our library than in yours.我们图书馆藏书(数量)是你们图书馆藏书的四倍。

倍数表达法

倍数表达法

倍数表达法与as 用法汇总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 ________________________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 ___________________ 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 ___________________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 ________________________ Europe. 亚洲的面积是欧洲的四倍。

This big stone is _______________________________that one. 这块大石头的重量是那块的三倍。

The plane flew________________________________ 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/weight…+of+B”,表示“A正好是B的多少倍”。

如:This street is ______________________________ that one. 这条街是那条街的四倍长。

This hill is _________________________________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。

科技英语中倍数的常用表达方式及翻译

科技英语中倍数的常用表达方式及翻译

科技英语中倍数的常用表达方式及翻译英语表示倍数增减或倍数对比的句型多种多样,其中有一些句型很容易译错。

例如,1)This room is 3 times larger than that one.2)This room is 3times as large as that one.3)This room is 3 times the size of that one.这里包含有三种表示增加多少倍的句型,不能译为这个房间比那个房间大三倍,应译为这个房间是那个房间的三倍大或这个房间比那个房间大两倍? 。

之所以会出现这样的情况,是因为英文和中文两种语言的表达思维是不一样的。

只有懂得了两种思维方式的差异,才能正确地进行英语倍数的翻译J。

本文拟将常用的英语数句型及其正确译法予以归纳。

一、倍数增加的表达方法表达A是B的N倍长(宽、高、大、重等),A比B长(宽、高、大、重等)N 倍或A的长度(宽度、高度、大小、重量等)是B的N倍,可用下列三种句型。

(一)A +be+倍数+as+计量形容词原级+ as + B例如:This bed is three times as big as that one.这张床是那张床的三倍大。

(比那张大两倍)This tree is three times as tall as that one.这棵树是那棵树的三倍高。

(比那棵高两倍)His father is twice as old as he.他父亲的年纪有他两倍大。

(比他大一倍)Asia is four times as large as Europe.亚洲的面积是欧洲的四倍。

(比欧洲大三倍)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。

(比那块重两倍)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。

倍数用法

倍数用法

英语中“倍数”的常用表达方式(一)1. "A + be + 倍数+ as + 计量形容词原级+ 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+ 计量形容词比较级+ 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 id four times the size of the previous one.新扩建的广场是未扩建时的四倍大。

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.其它I'm twice/ double his age. 我的年龄是他的两倍。

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. 与去年相比,该单位职工的收入增加了50%.The price of TVs are twofold( adj. 两部分的, 双重的) down over these years.近几年来,电视机的价格下降了两倍。

高中英语Module5 SectionⅡGrammar__倍数表达法与形容词副词的比较级教案含解析外研版必修1

高中英语Module5 SectionⅡGrammar__倍数表达法与形容词副词的比较级教案含解析外研版必修1

Section ⅡGrammar——倍数表达法与形容词/副词的比较级1.形容词/副词的原级比较【语境领悟】*English is as useful as Chinese for us.对我们来说,英语和汉语一样有用。

*He is not as tall as his roommate.他不如他的室友高。

*He runs as fast as his elder brother.他跑得和他哥哥一样快。

*He is as kind a person as his father.他和他父亲一样都是善良的人。

【知识归纳】形容词/副词原级比较表示两者程度相同,常用句型为:(1)A+谓语+as+形容词/副词+as B A和B一样……(2)A+谓语+not as/so+形容词/副词+as BA不如B……(3)A+谓语+as+形容词+a/an+单数名词+as B A和B一样是……样的人/物2.形容词/副词的比较级【语境领悟】*This apple is sweeter than that one.这个苹果比那个甜。

*They worked harder than ever before.他们比以往工作更努力。

【知识归纳】形容词/副词比较级常用句型:(1)A+谓语+形容词/副词比较级+than+B,表示“A比B更……”。

(2)A+谓语+not+形容词/副词比较级+than+B,表示“A不如B……”。

[考情分析]形容词和副词的比较等级是英语中常见的考点之一,考题常见于语法填空及书面表达中。

[即时训练]Ⅰ.单句填空1.Asia is four times as large as Europe.2.He does his homework more and more carefully.3.The more_careful (careful) you are the fewer mistakes you will make.4.Look at the two boys. My brother is the taller of the two.5.His house is twice larger (large) than mine.6.This orange is a little bigger (big) than that apple but much smaller (small) than that watermelon.7.Now the air in New Delhi is rather worse (bad) than it was before.Ⅱ.同义句转换,每空一词1.He doesn't speak English better than me.He doesn't speak English as/so well as me.2.He is the youngest in his class.①He is younger than any other student in his class.②He is younger than any of the other students in his class.3.He is not diligent. I am not diligent either.He is no more diligent than I am.4.I have never read a more interesting novel.It is the most interesting novel I've ever read.5.You have five books. And so do I.I have as many books as you do.Ⅲ.完成句子1.这个房间不如那个大。

因数和倍数知识点归纳

因数和倍数知识点归纳

因数和倍数知识点归纳一、因数:1.定义:若整数a除以整数b,商为整数而没有余数,那么b就是a 的因数,同时a也是b的倍数。

2.性质:每个整数都有1和它本身作为因数,这两个因数称为它的“平凡因数”。

3.因数的表示:a.用数学符号表达:记作a,b(a能整除b),读作“a整除b”或“b能被a整除”。

b.用集合表示:将a的所有因数放在一对括号中,如{1,a}表示a的因数集合。

4.因数的判断:若a能整除b,则b是a的因数;若a能被b整除,则a是b的因数。

5.因数的个数:a.若n是一个合数(非素数),则它的因数个数一定大于2个。

b.若n是一个素数,它的因数只有1和它本身两个。

6.因数的性质:a.因数是整数,可以是正数、负数或零。

b.若x是y的因数,y是z的因数,则x也是z的因数。

7.因数的求法:a.可以通过试除法来求一个数的因数。

从2开始逐个试除,直到试除到该数的平方根为止。

b.可以通过质因数分解来求一个数的因数。

将该数分解为若干个质数的乘积,再根据乘法的交换律将质数分解表示的因数重新排列组合。

二、倍数:1.定义:若整数a除以整数b,商为整数,则a是b的倍数,b是a的约数。

2. 性质:对于任何整数a和正整数b,ab都是a的倍数,且ab/a=b。

3.倍数的表示:a.用数学符号表达:记作a∣b(a是b的倍数)。

b.用集合表示:将a的所有倍数放在一对括号中,如{a,2a,3a,...}表示a的倍数集合。

4.倍数的判断:若a是b的倍数,则b是a的因数。

5.最小公倍数(LCM):表示两个或多个数共有的最小倍数。

6.最大公约数(GCD):表示两个或多个数共有的最大因数。

三、公约数和公倍数:1.公约数:两个或多个数同时能够整除的因数,称为公约数。

a.公约数的求法:通过分别求出两个或多个数的因数集合,找出它们的交集即为它们的公约数。

b.公约数的性质:若a是b的公约数,而b是c的公约数,则a也是c的公约数。

2.公倍数:两个或多个数同时是另一个数的倍数,称为公倍数。

英语中倍数的表达方式和译法

英语中倍数的表达方式和译法

I. 英语倍数表达法用英语表达"A 是B 的N 倍长(宽,高,大,重等)","A 比B 长(宽,高,大,重等)N 倍" 或"A 的长度(宽度,高度,大小,重量等)是B 的N 倍",可用下列几种句型。

1."A + be + 倍数+ as + 计量形容词原级+ 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+ 计量形容词比较级+ 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。

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.其它I'm twice/ double his age. 我的年龄是他的两倍。

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。

表示倍数的几种表达法英语

表示倍数的几种表达法英语

表示倍数的几种表达法英语表达倍数时,两倍用twice/double, 三倍以上用基数词+times,常见的表达方式如下:1.倍数+as…as型例如:We have produced three times as many computers as we did last year.我们生产的计算机是去年的三倍多。

2. 倍数+the size of 型例如:China is almost five times the size of Mexico in area.在面积上,中国几乎是墨西哥的五倍大。

3. 倍数+what从句例如:The length of the road is twice what it was three years ago.这条路是三年前的两倍长。

4. 倍数+比较级+than例如:I am twice older than you. 我的年龄是你年龄的两倍。

5. 比较级+ than…+ by+倍数例如:The line is longer than that one by twice.这根绳子比那根长两倍。

6. 习题巩固1. Americans eat ________ apples per person today as they did in 1960.A. more than twiceB. as twice as manyC. twice as many asD. more than twice as many2. Paper produced every year is _______ the world's production of vehicles.A. the three weight ofB. three times the weight ofC. as three times heavy asD. three times as heavier as3. With the help of the German experts,the factory produced ______ cars in 1996 as the year before.A. as twice manyB. as many twiceC. twice as manyD. twice many as4. This ship measures ________ that one.A. as twice as longB. as twice long asC. twice long asD. twice as long as5. After the new technique was introduced, the factory produced _______ tractors in 1890 as the year before.A. as twice manyB. as many asC. as twice as manyD. twice as many答案:D B C D D。

英语中倍数的表达法归纳总结

英语中倍数的表达法归纳总结

英语中倍数的表达法归纳总结In English, the expression of multiples can vary based on context and usage. The most straightforward way to express multiples is by using the word "times" to indicate how many times one number is contained within another. For example, saying "two times three is six" clearly articulates the multiplication of two and three to yield six. When referring to a specific mathematical factor, one might say, "three is a multiple of six" or "six is a multiple of three," emphasizing the relationship between the numbers.Another common phrase is “double,” “triple,” or “quadruple,” which refers to multiplying by two, three, or four, respectively. For instance, “This recipe serves four, but I want to double it to serve eight.” Additionally, the term "times as many" is often used to denote a ratio, such as “He earns three times as much as she does.”When discussing multiples in a more general context, the term "multiple" itself can be employed. For instance, “The multiples of five include five, ten, fift een, and so on.” Furthermore, expressions like “fivefold” or “tenfold” indicate an increase by five or ten times, respectively, often used in discussions about growth or expansion.Overall, the expression of multiples in English encompasses numerical phrases, comparative terms, and specific vocabulary that captures the essence of multiplication in various contexts.。

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文中有这样一句话:If you offered me six times what you have just offered, I would still take my pound of flesh. (P.67)
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。

【真题再现】
①At a rough estimate, Nigeria is _______ Great Britain. (上海卷2005)
A. three times the size as
B. the size three times of
C. three times as the size of
D. three times the size of
②What a table! I’ve never seen such a thing before. It is _______ it is long.(湖北卷2005)
A. half not as wide as
B. wide not as half as
C. not half as wide as
D. as wide as not half
③Americans eat ____ vegetables per person today as they did in 1910.(上海卷2002春)
A. more than twice
B. as twice as many
C. twice as many as
D. more than twice as many
【点拨】①倍数要放在the size of的前面,three times the size of表示“……比……大两倍”,故选D。

②从题意知,这张桌子的长度不到宽度的一半,这里half相当于倍数,放在as前面。

故选C。

③more than twice表示数量,应置于as...as结构之前,意为“是……两
倍多”。

题意:美国人现在每人所吃的蔬菜是1990年的两倍多。

选D。

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