英语倍数比较级

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。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。

（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。The mother elephant is one hundred times heavier than the baby elephant.这只母象比小象重一百倍。使用more...than 比较级的例句：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。

2、倍数+the 度量词 of...The earth is 49 times the size of the moon. 地球的体积是月球的 49 倍。下边也可看作是这种句式的变化：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。In this workshop the output of July was 3.5 times that of January. 七月份的产量是元月份的 3.5 倍。

3、其它表示法(1) 英语中有些词表示特定的倍数，例如： again (一倍), twice, double (两倍), triple (三倍), fourfold (四倍) 等数。My Aunt is as old again as I am. 我姑姑的年龄比我大一倍。The output of grain increased fourfold. 粮食产量增加了三倍。

（2） 使用by, compared with 等