英語表示倍數(shù)增減或倍數(shù)對比的句型多種多樣，其中有 一些（如下文中的句型⑵、⑸、⑹、⑻、⑿ 等）很容易譯錯，其主要原因在于：英漢兩語在表述或?qū)Ρ缺稊?shù)方面存在著語言與思維差異?，F(xiàn)將常用的英語倍數(shù)句型及其正確譯法歸納如下：

       倍數(shù)增加

       （一）A is n times as great (long, much, ...) as B. ⑴

       A is n times greater (longer, more, ...) than B. ⑵

       A is n times the size (length, amount, ...) of B. ⑶ 

       以上三句都應(yīng)譯為：A的大小（長度、數(shù)量、……）是B的n倍，或A比B大（長、多、……）n-1倍。

       eg: This book is three times as long as that one. / three times longer than that one. / three times the length of that one.

       這本書的篇幅是那本書的3倍（即比那本書長兩倍）。

       注：當相比的對象B很明顯時，than (as, of) B 常被省去。

       （二）increase to n times ⑷

       increase n times / n-fold ⑸ 

       increase by n times ⑹ 

       increase by a factor of n ⑺ 

       以上四句均應(yīng)譯為：增加到n倍，或增加n-1倍。

       eg: The production of integrated circuits has been increased to three times as compared with last year.

       集成電路的產(chǎn)量比去年增加了兩倍。

       eg: The output of chemical fertilizer has been raised five times as against 1986.

       化肥產(chǎn)量比1986年增加了4倍。

       eg: That can increase metabolic rates by two or three times.

       那可使代謝率提高到原來的2倍或3倍（即提高1倍或2倍）。

       eg: The drain voltage has been increased by a factor of four.

       漏電壓增加了3倍（即增加到原來的4倍）。

       注：在這類句型中increase常被raise、grow、go/step up、multiply 等詞所替代。

       （三）There is a n-fold increase / growth... ⑻

       應(yīng)譯為：增加n-1倍，或增至n倍。

       這個句型還有其它一些形式：

       eg: A record high increase in value of four times was reported.

       據(jù)報道，價值破記錄地增長了3倍。

       （四）double（增加1倍）、treble（增加2倍）、quadruple（增加3倍）⑼

       eg: The efficiency of the machines has been more than trebled or quadrupled.

       這些機器的效率已提高了2倍或3倍多。

       （五）此外，英語中還有一種用again而不用倍數(shù)詞來比較倍數(shù)的方法，如：

       A is as much (large, long, ...) again as B. = A is twice as much (large, long, ...) as B. ⑽ 

       應(yīng)譯為：A比B多（大、長、……）1倍。

       A is half as much (large, long, ...) again as B. = A is one and a half times as much (large, long, ...) as B. ⑾

       應(yīng)譯為：A比B多（大、長、……）一半，即A是B的一倍半。