文档介绍：2011中考英语一轮复习—英语中表示倍数增加的表达方法
(一) A is N times as great(long, much,…)as B. (①)
A is N times greater (longer, more,…)than B. (②)
A is N times the size (length, amount,…)of B. (③)
    以上三句都应译为:A的大小(长度,数量,……)是B的N倍.
    . This book is three times as long as (three times longer than/three times the length of)that one.
    这本书的篇幅是那本书的3倍(即长两倍)。
    注:当相比的对象B很明显时,than (as,of) B常被省去。
(二) increase to n times(④)
   increase n times/n-fold(⑤)
   increase by n times(⑥)
   increase by a factor of n(⑦)
    以上四式均应译为:增加到n倍(或:增加n-1倍)。
    . The production of integrated circuits has been increased to three times pared with last year. 集成电路的产量比去年增加了两倍。
. The output of chemical fertilizer has been raised five times as against l986. 化肥产量比1986年增加了4倍。
    . That can increase metabolic rates by two or three times. 那可使代谢率提高到原来的2倍或3倍(即提高1倍或2倍)。
    . The drain voltage has been increased by a factor of four. 漏电压增加了3借(即增加到原来的4倍)。
    注:在这类句型中increase常被raise,grow,go/step up,multiply等词所替代。
(三) There is a n-fold increase/growth…(⑧)
    应译为:增加n-倍(或增至n倍)。这个句型还有其它一些形式:
    . A record high increase in value of four t