英語(yǔ)中表示倍數(shù)的常見句型

1、英語(yǔ)中表示倍數(shù)的常見句型 倍數(shù)表達(dá)法是高中英語(yǔ)教學(xué)的重點(diǎn)，也是歷屆高考的熱點(diǎn)。當(dāng)我們要表達(dá)甲是乙的幾倍時(shí)，通常用下面三個(gè)句型來(lái)表示： 一. “倍數(shù)+形容詞（或副詞）的比較級(jí)+than+從句” 表示“A比B大（長(zhǎng)、高、寬等）多少倍”This rope is twice longer than that one.這根繩是那根繩的三倍（比那根繩長(zhǎng)兩倍）。The car runs twice faster than that truck.這輛小車的速度比那輛卡車快兩倍（是那輛卡車的三倍）。This street is four times shorter than that one. 這條街道比那條短

2、四倍。The mother elephant is one hundred times heavier than the baby elephant.這只母象比小象重一百倍。It is ten times louder than another. 它比另外一個(gè)的聲音大十倍。This street is three times wider than that one. 這條街比那條街寬三倍。I am twice older than he. 我的年紀(jì)比他大兩倍。The box is one-third bigger than that one. 這個(gè)盒子比那個(gè)盒子大三分之一。二. “倍數(shù)+as+

3、形容詞或副詞的原級(jí)+as+從句” 表示“A正好是B的多少倍”。Asia is four times as large as Europe.亞洲的面積是歐洲的兩倍。The plane flew ten times as high as the kite.那架飛機(jī)的飛行高度是那個(gè)風(fēng)箏的十倍（高出九倍）I am twice as old as he. 我的年紀(jì)是他的兩倍。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. 這條線是那條線的四倍長(zhǎng)。An ordina

4、ry train, approaching the station, can be twice as loud as the loudest jet. 普通火車進(jìn)站時(shí)發(fā)出的聲音可能是噴射機(jī)的兩倍。My command of English is not half so good as yours. 我英語(yǔ)掌握得還不及你的一半兒好。三. “倍數(shù)+the size/ height/ length/ width，etc.+of” 表示“A正好是B的多少倍”。This street is four times the length of that one.這條街是那條街的四倍長(zhǎng)。This hill i

5、s four times the height of that small one.這座山的高度是那座山的四倍（比那座山高三倍）Line A is four times the length of line B. 線條 A 是線條 B 的四倍長(zhǎng)。I have five times the number of Toms books. 我有五倍于湯姆的書。The river is ten times the length of the Tamsui River. 這條河的長(zhǎng)度是淡水河的十倍。It was over twice the distance of the earth from the s

6、un. 那是地球到太陽(yáng)的距離的兩倍多。The earth is 49 times the size of the moon. 地球的體積是月球的 49 倍。This river is three times the depth of that one. 這條河深度是那條河的三倍。 下邊也可看作是這種句式的變化：The length of the road is four times what it was three years ago. 這條路的長(zhǎng)度是三年前的 4 倍。The price of the meat is twice what it was last year. 肉價(jià)是去年的兩倍

7、。The size of the sun is a million times over that of the earth. 太陽(yáng)的體積比地球的體積大一百萬(wàn)倍。In this workshop the output of July was 3.5 times that of January. 七月份的產(chǎn)量是元月份的 3.5 倍。The principal advantage of the products is a two-fold reduction in weight. 這些產(chǎn)品的主要優(yōu)點(diǎn)是重量減輕了2倍。Ive paid five times the usual price for t

8、he stamp. 我出了5倍于往常的價(jià)格買這枚郵票。The average income of the staff has been increased by 50 percent compared with last year.職工的收入增加了50%.A survey shows that coverage rates have increased by from two-fold to four-fold. 調(diào)查表明，覆蓋率已由兩倍增至四倍。 除掌握倍數(shù)表達(dá)的三個(gè)常規(guī)句型外，我們更要注意的是其常規(guī)句型的變形及其特殊規(guī)律。四、常規(guī)倍數(shù)句型的變形（共七種） 一） 倍數(shù)+times+more+

9、名詞（可數(shù)，不可數(shù)）+thanThere are five times more books in our library than in yours.我們圖書館里的書比你們圖書館里的書多五倍。We have produced twice more grain this year than we did last year.我們今年生產(chǎn)的糧食是去年的兩倍。He earns five times more money than he did ten years ago. 他現(xiàn)在掙的錢比十年前掙的多 5 倍。There are twice more students in our class th

10、an in theirs. 我們班的學(xué)生人數(shù)比他們班多兩倍。二） 倍數(shù)+times as many/much+名詞+asasThere 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. 他比往常多賺二倍的錢。Weve produced twice as much cotton this year as ten years ago. 今年的棉花比十年前多了一倍

11、。He has got three times as many books as his sister. 他擁有的書的數(shù)量是他妹妹的三倍。She spent half as much money as you. 她花掉的錢只有你花掉的一半。 需要時(shí)還可以在倍數(shù)詞前，加over，more than等表示“是的多少倍還要多”。例如： China is more than three times as rich as it used to. 中國(guó)的財(cái)富是過(guò)去的三倍還不止。I am more than twice as old as he. 我的年齡是他的兩倍還不止。He studies more t

12、han three times as hard as I. 他用功的程度是我的三倍還不止。He has collected more than three times as many stamps as I .他搜集的郵票是我的三倍還不止。 三）倍數(shù)+times over+被比對(duì)象，表示“增加倍”The price of TVs are twofold down over these years.近幾年來(lái)，電視機(jī)的價(jià)格下降了兩倍。 四） times+that of+被比對(duì)象，表示“是倍” The grain output in that village is twice over that o

13、f 2002.Last year the output value of industry was 59 percent higher than that of 1976. 去年工業(yè)產(chǎn)值比 1976 年增長(zhǎng)了 59 。In this workshop，the output of July was 4.5 times that of January.五）times+compared with +被比對(duì)象 .by +倍數(shù)詞The number of the students in our school has increased 4 timescompared with 1980.我們學(xué)校的學(xué)生人

14、數(shù)比1980年增加了三倍。Compared with last year，our coal output has increased by three times. 與去年相比，我們的煤產(chǎn)量增長(zhǎng)了 3 倍。(使用by.)The number of the students in our school has increased four times compared with 1980.我們學(xué)校的學(xué)生人數(shù)比 1980 年增加了 3 倍。(使用 compared with)His speed is faster than mine by four times.他的速度比我的快 4 倍。The p

15、roduction of steel has been increased to three times compared with last year. 鋼鐵的產(chǎn)量比去年增加了兩倍。六）英語(yǔ)中有些詞表示特定的倍數(shù)，例如： again (一倍),two-fold，twice, double (兩倍), triple (三倍), fourfold (四倍) 等數(shù)。 My Aunt is as old again as I am. 我姑姑的年齡比我大一倍。She has as much again experience as I.她的經(jīng)驗(yàn)比我的多一倍。The top-brand clothes are of