倍数英语点读

倍数英语点读：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。