比较级、倍数

1、.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

2、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

3、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：Weve produced twice as much cotton this year as （ we did ） ten years ago.今年我们生产的

4、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 s

5、ize 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 threetimes.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. “ time

6、s + 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：Inthisworkshop the outputof Julywas 3.5 times thatof 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 t

7、hat 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 ， double （两倍）， triple （三倍）， fourfold （四倍）等词表示倍数。 例如：as large again as两倍于 ,比.大一倍as many again as比. 多

8、一倍 , 加倍 as much again as比. 多一倍 , 加倍 as old again as年纪比 . 大一倍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 pricehere.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。四、用 double 表示倍数1. double 用作形容词，表示“两倍的”。如：The production is now double what it was ten years ago.现在的产量是十年前的两倍。2. double 用作动词，表示“是 的两倍。如：The output has been doubled in the past six years.在