12种倍数表达法
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：之杨若古兰创作1.倍数+as+描述词或副词的原级+as+其它.这类结构又常演酿成以下两类：①倍数+as+many+可数名词复数+as;②倍数+as+much+不成数名词+as.如：There are seven times as many people as I expected.是我意料的人数的七倍.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+描述词（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.新扩建的广场为之前的四倍大.5.倍数+what从句.如：The production is now three times what it was ten years ago.此刻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.The average income of the staff has been increased by 50 percent compared with last year.与去年比拟，该单位职工的收入已添加了50%.He runs faster than me by three times.他跑得比我快三倍. {考查方向}1）倍数在句中的地位普通放在第一个as前面或比较级前面或名词前面.2）用times暗示倍数时，普通只限于暗示包含基数在内的三倍或三倍以上的数.暗示两倍可以用twice或double,一倍用once.【重点归纳】除了我们初中所学的描述词的比较级的用法，本模块我们次要归纳几种句式结构：（一）含倍数的比较句型1.倍数+as+描述词原级+as….如：This bridge is three times as long as that one.His room is twice as big as mine;in other words,mine is only half as big as his.【特别提醒】“as…as”两头加入名词的句式：●倍数+as+描述词+a/an+可数名词单数+as…●倍数+as+描述词+可数名词复数/不成数名词+as….如：Last year my brother twice as big a new house as mine.He has collected more than three times as many stamps as I (have).I spent twice as much time on my studies as you did.【难点点拨】该结构的省略：通常省略描述词后面的名词及比较的部分.如：I have to transfer(转乘）buses so I spend twice as much (money as others)for the bus every day.2.倍数+描述词比较级+than….如：This street is four times shorter than that one.Fear of danger is ten thousand times more terrifying than danger itself.【特别提醒】倍数+描述词比较级+名词+than….如：He earns five times more money now than he did ten years ago. There are three times more books in our library than in yours. 3.倍数+the+名词（如size,height,weight,length,width,depth 等）+of….如：This well is three times the depth of that one.4.另外，请留意上面两种说法：（1）倍数+what从句.如：The length of the road is four times what it was three years ago.(2)倍数+that of+被比较对象.如：Airmail charges almost twice or three times that of a normal mail. (二）其它句式1."比较级+and+比较级"暗示"愈来愈…".如：Things are getting better and better every day.Our country is becoming more and more beautiful.2."the+比较级…，the+比较级…"暗示“越…，就越…”.如：The more you have, the more you want.The more a man knows, the less he knows he knows.【常识扩展】在描述词比较级前可以加a little,a bit,alot,no,any,much,far,even,still等副词（组暗示程度的加深.如：The result is much better than we expected.Actually,health is far more important than wealth.。
中学英语中常见的“倍数”表达法
中学英语中常见的“倍数”表达法■崔长平河南省遂平县第一高级中学（463100）在中学英语中，我们常见的“倍数”表示法一般都是：倍数 + 结构。
表示“倍数”的说法有：“一倍”：once “两倍”：twice，double，duple，twofold等“三倍”：three times，triple，treble，threefold等“四倍”：quadruple，four times，fourfold等一般来说，“三倍”及其以上都可以使用“基数词 + times”或者“基数词 + fold”来构成。
1）“倍数 + as … as …”结构，又称作“原级比较结构”（原级形容词或副词的位置上也可以放置含有many，much，few，little之类修饰词的名词。
）The box is four times as heavy as that one.This bridge was three times as long as the newly-built one.The river is twice as wide as that one.They have produced fourfold as many washers as they did last year.2）“倍数 + 形容词或副词的比较级 + than …”结构，又称作“比较级结构”The car runs twenty percent faster than the motor.The cotton output was four times greater than that of 2006.A is twice less than B.3）“倍数 + the + 长（宽、高、深、大、小等）的名词 + of …”结构，又称作“名词结构”The lake is twice the width of that lake.The earth is 49 times the size of the moon.也可以使用：“倍数 + 含有限定词的名词”结构：You are twice her age.It is worth twice the value.He has paid three times the usual price.The taxi-driver demanded double the usual fare.The money is double the amount I need.介词by经常被用来表示“增减幅度”；介词to表示“增减至……”。
倍数表达法及比较级最高级
倍数表达法及比较级，最高级两倍：twice 三/四/五倍：three/four/five times注意：以下10结构中的倍数也可换成分数或百分数：如：one-third 三分之一； two-thirds 三分之二；80 percent 百分之八十。
1. A+谓语V+倍数+as+adj/adv原级+as+B2. A+谓语V+倍数+adj/adv比较级+than+B3. A+谓语V+倍数+the+计量名词(size/weight/length/height--)+of+B4. The+计量名词+of+A+be+倍数+that+of+B5. --------------倍数+what从句6. --------------倍数+that+of+B7. --------------倍数+as+many/much+名词复数/U+as+B 8. --------------倍数+more+名词复数/U+than+B 9. --------------倍数+compared with B10. --------------倍数+形容词性物主代词+nEg. 1.This stick is three times as long as that one.这个棍子是那个的3倍长。
2. This stick is three times longer than that one.这个棍子比那个棍子长3倍。
3. This stick is three times the length of that one.这个棍子是那个棍子的3倍长。
4. The length of this stick is three times that of that one.这个棍子的长度是那个的3倍。
5. The output now is three times what it was ten yeas ago.现在的产量是十年前的3倍。
倍数用法总结
副词的位置
• We___our breakfast when an old man came to the door.
A.just have had
B.have just had
C.just had had
D.had just had
频率副词 always, often, frequently, seldom, never,ever, usually, rarely, occasionally, no sooner, hardly, scarcely 等以及 just, shortly 等
其他副词必须放在助动词、情态动词或 be 动词与实义动 词之间。在省略结构中，这些副词必须放在助动词，情态 动词或 be 动词之间。
程度副词的位置
• How I wish John recognized the fact that he ___in the wrong.
A.is always nearly
Welcome
倍数表达法
（1）倍数+as+原级+as+被比对象 Examples
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）倍数+比较级+than+被比对象
B.always is nearly
C.is nearly always
D.nearly is always
程度副词的位置通常放在所修饰的词前面,如 very, much, almost, hardly, nearly，awfu的后面。
英文倍数表达法
英文倍数表达法有：
1.“A+倍数+形容词或副词的比较级+than+B”，表示“A正好比B
大（几倍）”。
例如：This tree is three times higher than that one. 这棵树正好比
那棵树高三倍(高两倍)。
2.“A+倍数+as+形容词或副词的原级+as+B”，表示“A正好比B大
（几倍）”。
例如：The pig is twice as big as the dog. 这只猪正好比这只狗大
两倍。
3.“……times+what+从句”。
例如：The production of integrated circuits has been increased four
times what it was last year. 集成电路的产量已比去年增加了三倍。
4.“A+倍数+more+名词（如：income）+than+B”，表示“A比B多
若干倍”。
例如：His income is four times more than mine. 他的收入是我的
收入的四倍。
5.“……times+the size/height/length/width，etc+of+名词”，表示
“……正好是……的……倍”。
例如：The size of the ball is five times the size of the box. 球的大
小正好是箱子的大小的五倍。
英语倍数的正确表达方法
英语当中正确表达倍数的方法在使用英语表达"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一倍。
The dictionary is exactly five times more expensive than that one.这本字典比那本恰好贵四倍。
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。
倍数表达法
在英语中，1倍用once ，2倍用twice ，3倍及以上用基数词+times 。
如5倍：five times 。
但在句子中要如何表达倍数呢？1.原级表示法“主语+谓语+倍数+as+原级+as ”结构。
e.g.Their room is three times as big as ours.他们的房间是我们的3倍大。
2.比较级表示法“主语+谓语+倍数+比较级+than+比较对象”结构。
e.g.He has read four times more books than I have.他读过的书比我读过的书多4倍。
3.借助名词表示法“主语+谓语+倍数+the size/amount/length …of …”结构。
e.g.The earth is 49times the size of the moon.地球的体积是月球的49倍。
注意：倍数的翻译方式通常有两种：一是“……比……（大/宽/多等）N 倍”，二是“……是……的N +1
倍（大/宽/多等）”。
e.g.This street is three times longer than that
one.这条街比那条街长3倍。
/这条街的长度是那条街的4倍。
◎高
璐数
表
达
法。
英语倍数的表达方法
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。
ቤተ መጻሕፍቲ ባይዱ
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
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。
倍数英语的表达方式
倍数英语的表达方式摘要：1.倍数英语的基本表达方式2.常见的倍数表达法及其用法3.倍数表达时的注意事项正文：在学习英语的过程中，掌握倍数表达方式是非常重要的。
本文将为您介绍倍数英语的基本表达方式、常见的倍数表达法及其用法，以及在表达倍数时需要注意的事项。
一、倍数英语的基本表达方式在英语中，表示倍数的词语主要有"times"、"double"、"triple"、"multiple"等。
其中，"times"表示倍数的最基本方式，可直接用于数值之前，如：2 times、3 times等。
另外，需要注意的是，当倍数大于10时，用"-fold"表示，如：10 times称为10-fold，100 times称为100-fold。
二、常见的倍数表达法及其用法1."times"表示倍数的基本用法例如：- She has read the book three times.（她已经读了这本书三遍。
）- His salary has been increased five times.（他的工资已经涨了五倍。
）2."double"表示倍数的用法"double"意为“两倍”，可以用于表示数量翻倍的情况。
例如：- His height is double mine.（他的身高是我的两倍。
）- The price of oil has doubled in the past year.（过去一年里，油价已经翻了一番。
）3."triple"表示倍数的用法"triple"意为“三倍”，可以用于表示数量翻倍的情况。
例如：- The amount of water has tripled since last month.（水量比上个月增加了三倍。
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。
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。
倍数表达法(完整版)
increase/fall等增减性动词+by+倍数 Compared with last year, our coal output has increased by three times.
7 compare with
倍数+compared with+被比较对象 The number of the students in our school has increased by four times compared with 1980.
倍数表达法
4 many/much
倍数+as many/much +名词+as… He has got three times as many books as his younger sister.
5 what从句
倍数+what从句 The price of the house this year is twice what it was last year.
2 比较级比较
A + be + 倍数 + adj.比较级 + than + B Our school is three times bigger than yours.
3 性质名词比较
A + be + 倍数 + 性质名词（the size/ length/ height/ depth/ width） + of + B The new building is four times the size of the old one. =The size of the new building is four times that of the old one.
英语倍数的表达法
4.... times＋more＋名词（可数, 不可数） ＋than...
There are four times more books in our library than in yours. 我们图书馆藏书（数 量）是你们图书馆的四倍。（多三倍） • We have produced twice more grain this year than we did last year. 我们今年生产的 粮食比去年增长一倍。（是去年的两倍）
6.... times＋over＋被比对象表示“增加…… 倍” The grain output in that village was twice over that of 1978. 那个村的粮食产量比一 九七八年的增加了两倍。
• 7.... times＋thatof＋被比对象“是……倍”。 • In this workshop, the output of July was 3. 5 times that of January. • 这个车间七月份的产量是元月份的三点五 倍。
5.... times ＋as many（或much） ＋名词＋其它……
• There is three times as much water in this pot as in that one. 这个壶里的水（量）是 那个壶里的三倍。 • There are five times as many students as we expected. 到的人是我们预计的五倍。
％（percent, per cent） 二、用... ％（ ） ＋up on＋被比对象 ＋
• Altogether, more than 70 percent of the surface of our planet is covered by water.
英语中倍数的表达法汇总
英文倍数表达法1.A + be + 倍数+ （......）+ B(1) as + 计量形容词/副词原级+ asThis tree is three times as tall as that one.His father is twice as old as he.as many （或much ）＋名词＋asWe've produced twice as much cotton this year as （we did ）ten years ago.He has got three times as many books as his sister.(2)计量形容词/副词的比较级+ thanThe Yangtze River is almost twice longer than the Pearl River.The dictionary is exactly five times more expensive than that one.more+名词+thanHe earns five times more money than he did ten years ago.There are twice more students in our class than in theirs.(3) the + 计量名词（size、height、weight、length、width）+ ofThe newly broadened square id four times the size of the previous one.(4) up on （或over ）…He is three times up on your age.2.The + 计量名词+ of + A + be + 倍数+ (......)(1)that + of + BThe size of the newly broadened square is four times that of the previous one.(2)what 从句The length of the road is four times what it was three years ago.(3)up on （或over ）…The size of the sun is a million times over that of the earth.3.A + be + 比较级+ than+ B+by+倍数.His speed is faster than mine by four times.4.同一事物不同时间段比较“…倍数+ compared with ＋被比较对象”Compared with last year，our coal output has increased by three times.The number of the students in our school has increased for times compared with 1980.5.可用"主语+谓语+...+ as + 形容词（副词）+ again + as"表示。
倍数表达
倍数表达法一、用times表示倍数1、“A +be + 倍数+ as+adj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 faher is twice as old as he. 他父亲的年纪有他两倍大。
2、“A+be+倍数+adj 比较级+ than +B”The Yangtze River is almost twice longer than the Pearl River.长江差不多比珠江大两倍。
The dictionary is exactly five times more expensive than that one. 这本字典比那本贵5倍。
3、“A+be+倍数+the+计量名词+of+B”The hill is four times the height of that small one. 这座山是那座的四倍。
4、“the +计量名词+of +A+be+倍数+that+of+B”The height of this hill is four times that of that small one.5、“。
times + as many/ much +名词+ as…”He has 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”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 is was last year. 肉价是去年的两倍7、“。
times +up on /over 。
”He is three times uo on your age. 他的年龄是你的倍。
英语中倍数表达法
英语中“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. “…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。
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。
倍数表达方法
倍数表达方法倍数表达方法1. 加法倍数表达法•通过多次累加同一个数，得到倍数的表达方法。
•例如：数 4 的倍数可以通过向自身多次累加得到，如 4+4=8，8+4=12，以此类推。
2. 乘法倍数表达法•通过将一个数乘以另一个数，得到倍数的表达方法。
•例如：数 3 的倍数可以通过将其乘以整数得到，如3×1=3，3×2=6，以此类推。
3. 除法倍数表达法•通过将一个数除以另一个数，得到倍数的表达方法。
•例如：数 10 的倍数可以通过将其除以整数得到，如10÷1=10，10÷2=5，以此类推。
4. 余数倍数表达法•通过一个数除以另一个数得到余数为0，即可确定该数是另一个数的倍数。
•例如：数 6 是 3 的倍数，因为6÷3=2 余 0。
5. 最小公倍数表达法•通过计算两个数的最小公倍数，可以确定倍数的表达方法。
•例如：数 15 和数 20 的最小公倍数是 60，因此两个数的倍数可以通过 60 的倍数来表示。
6. 规律倍数表达法•有些数的倍数可以通过观察其规律来表示。
•例如：数 9 的倍数有一个明显的规律，末尾的数字一直是 9、8、7、6、5、4、3、2、1、0 循环出现。
7. 图形倍数表达法•通过在图形上进行乘法、加法等运算，可以得到倍数的表达方法。
•例如：在正方形中，每边的长度是 4，将正方形复制 3 个，就得到了 3 倍的该正方形。
以上是常见的倍数表达方法，可以根据具体情况进行选择和运用。
不同的方法适用于不同的场景，灵活运用倍数表达方法可以帮助我们更好地理解和计算倍数。
8. 分数倍数表达法•通过将一个数用分数形式表示，可以确定倍数的表达方法。
•例如：数 1/2 的倍数可以通过将其乘以整数得到，如(1/2) ×1 = 1/2，(1/2) ×2 = 1，以此类推。
9. 负数倍数表达法•通过对一个数取相反数，可以得到该数的负数倍数的表达方法。
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
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. “…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。
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。
（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 + up on （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 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 ”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.
他的速度比我的快 4 倍。
9. “…times + compared with ＋被比较对象”例如：
The number of the students in our school has increased for times compared with 1980.
我们学校的学生人数比1980 年增加了 3 倍。
10. “…times + that of + 被比较对象”例如：
In this workshop the output of July was 3.5 times that of January.
这个车间七月份的产量是元月份的 3.5 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。
三、用again （一倍），double （两倍），triple （三倍），fourfold （四倍）等词表示倍数。
例如：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 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。