方法点拨：英语倍数的表示方法总结

　　关于英语倍数表示法的文章很多，而且列举了一大堆的句型，让人看了眼花缭乱。在仔细地分析了各种句式后，实际上，英语倍数最大的特点是：先说“倍数”，再说“是谁的……”，“比谁的……”等。概括起来，英语倍数表示主要就三种句式。

　　1、倍数+比较级...

　　(1) 倍数 as...as (意思是“A是B的几倍”。)

　　I am twice as old as he. 我的年纪是他的两倍。

　　He earns twice as much as he used to. 他比往常多赚二倍的钱。

　　An ordinary subway train, approaching the station, can be twice as loud as the loudest jet. 发出的声音可能是喷射机的两倍。

　　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. 这条线是那条线的四倍长。

　　We've produced twice as much cotton this year as ten years ago. 今年的棉花比十年前多了一倍。

　　He has got three times as many books as his sister. 他拥有的书的数量是他妹妹的三 倍。

　　在比较级前，还可以用over，more thant 等表示“比……倍还要多”。例如：

　　He is more than three times as rich as I. 他的财富是我的三倍还不止。

　　I am more than twice as old as he. 我的年龄是他的两倍还不止。

　　He studies more than three times as hard as I. 他用功的程度是我的三倍还不止。

　　He has collected more than three times as many stamps as I .他搜集的邮票是我的三倍还不止。

　　(2) 倍数+比较级 (意思是：A是B的几倍)

　　Line A is four times the length of line B. 线条 A 是线条 B 的四倍长。

　　I have five times the number of Tom’s books. 我有五倍于汤姆的书。

　　He has three times my money. 他的钱是我的三倍。

　　The river is ten times the length of the Tamsui River. 这条河的长度是淡水河的十倍。

　　This street is four times shorter than that one. 这条街道比那条短四倍。

　　The mother elephant is one hundred times heavier than the baby elephant.这只母象比小象重一百倍。

　　It is ten times louder than another. 它比另外一个的声音大十倍。

　　This street is three times wider than that one. 这条街比那条街宽三倍。

　　I am twice older than he. 我的年纪比他大两倍。

　　使用more...than 比较级的例句：

　　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。

　　比较级也可使用分数、小数等数字。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。

　　在比较级前，还可以用over，more thant 等表示“比……倍还要多”。例如：

　　It was over twice the distance of the earth from the sun. 那是地球到太阳的距离的两倍多。