比較級、倍數(shù)

1、、用times表示倍數(shù)（一般限于包括基數(shù)在內(nèi)三倍或三倍以上的數(shù)。表示兩倍的數(shù)，一般用 twice ）。其句式有：1. "times +形容詞/副詞的比較級+thdn”例如：Line AB is three times longer than line CD.線段AB是（線段）CD的三倍長。This hall is five times bigger than our classroom.這個大廳比我們的教室大5倍。2. "times +as +形容詞/副詞的原級+as"例如：This table is three times as long as that one

2、這張桌子是那張桌子的三倍長。This dictionary is five times as thick as the one you borrowed from the library.這本詞典的厚度是你從圖書館借的那本（厚度）的5倍。3. times + the + 名詞（如：size, height, weight, length, width 等）+of”例如：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.這條河是那條河的三倍

3、深。4. "times + more + 名詞+than "例如：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 than in theirs我們班的學生人數(shù)比他們班多兩倍。5. "times +as many （或 much ）+名詞+ds例如：We've produced twice as much cot ton t his year as （ we did ） ten

4、 years ago.今年我們生產(chǎn)的棉花比十年前多了一倍。（漢語中的多一倍實際上也指兩倍 樣多。）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3倍。6. "times + what從句”例如：The length of the road is four times what it was three years ago.這條路的長度是三年前的4倍。The price of the meat is twice what it was last year.肉價是去年的兩倍。7. "times +

5、 up on （或 over ）”例如：The size of the sun is a million times over that of the earth 太陽的體積比地球的體積大一白萬倍。He is three times up on your age他的年齡是你的4倍（或：比你的年齡大3倍）。8. "+by + times ” 例如：Compared with last year, our coal output has increased by threetimes.與去年相比,我們的煤產(chǎn)量增長了 3倍。His speed is faster than mine by

6、four times他的速度比我的快4倍。9. "times + compared with +被比較對象"例如：The number of the students in our school has increased for timescompared with 1980.我們學校的學生人數(shù)比1980年增加了 3倍。10. "times + that of +被比較對象”例如:In this workshop the output of July was 3. 5 times that of January.這個車間七月份的產(chǎn)量是元月份的3.5倍。二、用分數(shù)

7、、百分數(shù)表示倍數(shù)。例如：The box is one-third bigger than that one這個盒子比那個盒子大三分之一。Last year the output value of industry was 59 percent higher than that of 1976.去年工業(yè)產(chǎn)值比1976年增長了 59 %oMy command of English is not half so good as yours我英語掌握得還不及你的一半兒好。三、用 again , double （兩倍），triple （三倍），fourfold （四倍）等詞表 示倍數(shù)。例如：as lar

8、ge again as兩倍于，比.大一倍as many again as比.多一倍，加倍as much again as比多一倍，加倍as old again as年紀比大一倍My Aunt is as old again as I am.我姑姑的年齡比我大一倍。The top-brand clothes are often sold as double the normal price here.這里名牌衣服的售價經(jīng)常比正常的售價高一倍。The new work procedure tripled the output.新工藝使產(chǎn)量增加兩倍。The output of grain increased fourfold.糧食產(chǎn)量增加了三倍。四、用double表示倍數(shù)1. double用作形容詞，表示“兩倍的”。如：The production is now double what it was ten years ago. 現(xiàn)在的產(chǎn)量 是十年前的兩倍。2. double用作動詞，表示“是的兩倍。如：The output has been doubled in the past six years