英语中分数、倍数与百分数的表达.
英语分数倍数小数和百分数的表示方法

英语分数、倍数、小数和百分数的表示方法?一、分数的表示法分数由基数词和序数构成——分子用基数词,分母用序数,分子超过“1”时,分母用复数:a [one] sixth(1/6), two thirds(2/3), three fifths()3/5)【说明】(1) 1/2 通常读作 a [one] half,一般不读作a second。
2. 1/4 可读作a [one] fourth,也可读作a [one] quarter。
3. 分子超过“1”分母之所以用复数可以这样理解:“三分之二”即两个(two)三分之一(third),既然是两个“三分之一”,那“三分之一”当然要用复数,即用thirds。
4. 在数学上,为了简洁起见,分子和分母均可用基数词,其间用介词over:3/4 读作three over four(对于比较复杂的分数通常采用此读法)?5. 带分数的读法:在整数与分数之间用and连接:five and two thirds?二、倍数的表示法表示倍数时通常借助half, double, twice, three times等之类的词:Half (of) the apples are bad. 一半苹果是坏的。
His homework is not yet half done. 他的作业还没完成一半。
He eats twice what I eat. 他的食量是我的两倍。
比较以下三句,虽然表达形式不同,但含义相同:1. This rope is three times as long as that one. 这根绳子是那根的三倍长。
2. This rope is three times longer than that one. 这根绳子是那根的三倍长。
3. This rope is three times the length of that one. 这根绳子是那根的三倍长。
第(1)句和第(3)句的意思比较清楚,但第(2)句常容易误解,有人认为它与其他两句意思不同,应理解为“这根绳子比那根绳子长三倍”,但绝大多数语法学家并不这样认为,而是认为以上三句意思相同。
英语分数、倍数、小数和百分数的表示法

英语分数、倍数、小数和百分数的表示法1. 分数的表示法分数由基数词和序数词构成,分子用基数词,分母用序数词,分子超过“1”时,分母用复数,如“十分之一”说成英语是a [one] tenth,“三分之二”说成英语是two thirds。
注:“二分之一”通常读作a [one] half,一般不读作a second。
另外,“四分之一”可读作a [one] fourth,也可读作a [one] quarter。
2. 倍数的表示法表示倍数时通常借助h alf, double, twice, three times等之类的词。
如:Half of our money goes on food. 我们有一半的钱花在食物上。
Many things now cost double what they did a few years ago. 许多东西比数年前贵了一倍。
比较以下三句,虽然表达形式不同,但含义相同:(1) This rope is three times as long as that one. 这根绳子是那根的三倍长。
(2) This rope is three times longer than that one. 这根绳子是那根的三倍长。
(3) This rope is three times the length of that one. 这根绳子是那根的三倍长。
第(1)句和第(3)句的意思比较清楚,但第(2)句常容易误解,有人认为它与其他两句意思不同,应理解为“这根绳子比那根绳子长三倍”,但绝大多数语法学家并不这样认为,而是认为以上三句意思相同。
3. 小数的表示法小数点前的数按普通基数词的读法读,小数点后的数按单个数字一一读出。
小数点后的0通常读作o h,有时也读作n ought或z ero,小数点读作p oint,如“五点三九”可读作five point three nine。
英语中倍数的表达方式

英语中倍数的表达方式 Final approval draft on November 22, 2020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:1.“…times+形容词/副词的比较级+than…”例如:LineABisthreetimeslongerthanlineCD.线段AB是(线段)CD的三倍长。
Thishallisfivetimesbiggerthanourclassroom.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:Thistableisthreetimesaslongasthatone.这张桌子是那张桌子的三倍长。
Thisdictionaryisfivetimesasthickastheoneyouborrowedfromthelibrary.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:Theearthis49timesthesizeofthemoon.地球的体积是月球的49倍。
Thisriveristhreetimesthedepthofthatone.这条河是那条河的三倍深。
4.“…times+more+名词+than…”例如:Heearnsfivetimesmoremoneythanhedidtenyearsago.他现在挣的钱比十年前挣的多5倍。
Therearetwicemorestudentsinourclassthanintheirs.我们班的学生人数比他们班多两倍。
5.“…times+asmany(或much)+名词+as…”例如:We'veproducedtwiceasmuchcottonthisyearas(wedid)tenyearsago.今年我们生产的棉花比十年前多了一倍。
英语中分数、倍数与百分数的表达

Multiples are used in business to represent the scale of operations or transactions. They are used in marketing to analyze market share and sales volume, and in finance to calculate investment returns and loan payments.
Multiples
Multiples are used in science to represent the scale of an object or phenomenon. They are used in astronomy to measure distances between stars and planets, and in biology to measure the size of cells and organs.
Percentage is a measure of part-to-whole relationship. It expresses the proportion of a whole that a part represents. For example, if 25% of the population is female, it means that the female population is one-quarter of the total population.
Expressions of fractions, multiples, and percentag
目录
• Fractional expression • Multiple expression • Percentage expression • The application of fractions,
英语中倍数的表达方式

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:1。
“… times +形容词/副词的比较级+ than …”例如:LineABis three times longer than line CD.线段AB 是(线段) CD 的三倍长。
This hallisfive times biggerthan 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 threetimes as longas that one.这张桌子是那张桌子的三倍长。
This dictionaryis fivetimesas thickas the one you borrowed from thelibrary。
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,w idth 等)+of …”例如:The earth is49 times the sizeof the moon。
地球的体积是月球的49倍。
This river is three times the depth of thatone。
这条河是那条河的三倍深。
4. “… times+more+名词+than…"例如:He earns five times moremoney than he did ten years ago。
他现在挣的钱比十年前挣的多5 倍。
There aretwice more students in our class thanin 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'veproducedtwiceas much cottonthis yearas ( we did )ten yearsago.今年我们生产的棉花比十年前多了一倍。
英语九年级【知识精讲】10,数词(3)倍数、分数、百分数等

单项选择。 ________ of the students in Sunshine Middle School ________ from the countryside. A. Two third; is B. Two thirds; are C. Two thirds; is D. Two third; are
倍 二、倍数的表示法
数
表示倍数时通常借助half, double, twice, three times等之类的词。
(1)…倍数+形容词/副词的比较级+than…
的
例如:This rope is twice longer than that one.
表
这根绳比那根绳长两倍。
示
This classroom is five times bigger than ours.
单项选择。 ________ of the students in Sunshine Middle School ________ from the countryside. A. Two third; is B. Two thirds; are C. Two thirds; is D. Two third; are
单项选择。 ( )Our hall is ________ theirs but it wasn't used completely. A. as large as 3 times B. as 3 times as C. 3 times as large as D. as 3 large times as
示
三分之二的水已经被污染了。
法
小 四、小数的表示法
数 与汉语一样小数点前的数按普通基数词的读法去读,小数点后的数按
倍数的表达方式

“倍数”的常用表达方式一、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: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.“… time s +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。
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。
英语倍数10种表达法(附词典例句)

1.倍数+ as +形容词原级 + as …2.倍数+形容词比较级 + than …3.倍数+ the +名词 (size/length/width/height...)of...4.倍数+ that + of …5.倍数+形容词性物主代词+名词6.倍数 + what + 从句7.用double, triple, threefold, fourfold等表倍数8.倍数 as many/much + 名词 + as + 被比较对象9.倍数 + more + 名词(可数或不可数)+than+被比对象。
如:10.分数/百分数(one-third /30%)+形容词比较级 + than …1.倍数+ as +形容词原级 + as …《朗文当代高级英语辞典》第五版第2745页twice词条They employ 90 people, twice as many as last year.他们雇用了90人,是去年的两倍。
Interest rates are twice as high as those of our competitors.利率是我们竞争对手的两倍高。
《柯林斯高阶英汉双解学习词典》第2868页twice词条The figure of seventy-million pounds was twice as big as expected.7,000万英镑的金额是预期的两倍。
《剑桥高阶英汉双解词典》第2435页twice词条The state is at least twice as big as England. 这个州至少是英格兰的两倍大。
《韦氏高阶英汉双解词典》第2268页twice词条2The new house is twice (=two times) as large as our old one.新房子是我们老房子的两倍大。
《韦氏高阶英汉双解词典》第40页again词条6half again as much 或half as much again 比… 多一半(用于两个数据的比较)My ticket cost half again as much as your ticket. (for example: my ticket costs $ 15 and your ticket costs $10) 我的票比你的贵一半。