英语表示倍数增减或倍数对比的句型多种多样，其中有 一些(如下文中的句型②、⑤、⑥、⑧、(12) 等， 见圈码)很容易译错——其主要原因在于：英汉两语在 *}&aK}h}I
表述或对比倍数方面存在着语言与思维差异。现将常 用的英语倍数句型及其正确译法归纳如下： ~n
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倍数增加 . +?lID
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， A^pp'{ !.
more，…)than B.(②)A is n times the size (length， amount，…)of 1"6k5wrIA
B.(③)以上三句都应译为;A的大小(长度，数量，……)是B的n倍[或A比B大(长，多，……)n-1倍]. Qeog$g.HI
Eg. This book is three times as long as (three times longer than，three *s4!;2ZhsU
times the length of )that one.
: seL=
这本书的篇幅是那本书的3倍(即长两倍)。 3?(p ;
注：当相比的对象B很明显时，than(as，of)B常被省去。 .e+UgC wi
二、increase to n times(④) KYW1<Wc p
increase n times/n-fold(⑤) a~"X.xT\R
increase by n times(⑥) ~` hcgCi%
increase by a factor of n(⑦) dVfDS-v !
以上四式均应译为：增加到n倍(或：增加n-1倍)。 %Q~Lk]B?t
Eg. The production of integrated circuits has been increased to three times :wAB"TCt0
as compared with last year. +60;z4y}w
The output of chemical fertilizer has been raised five times as against Q .
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l986.化肥产量比1986年增加了4倍。 z +I-3v
That can increase metabolic rates by two or three times. !Esiq<Yh
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)。 .D`#a
The drain voltage has been increased by a factor of four. lhTbg M
漏电压增加了3借(即增加到原来的4倍)。 , &SJ?XAs
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 mio'm
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： -9"Ls?Cu
Eg. A record high increase in value of four times was reported. K_}a cU
据报道,价值破记录地增长了3倍。 uBgHtjmae
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the swA"_A8>u
machines has been more than trebled or quadrupled.这些机器的效率已提高了2倍或3倍多。 @~ L.m}GF
五、此外，英语中还有一种用again而不用倍数词来比较倍数的方法，如： i=T/}c)
A is as much (large，long，…)again as B.(=A is twice as much ]Ox.6BKjDP
(large，long，…)as B.(⑩)应译为：A比B多(大，长，……)1倍。 zOw]P6Gk
A is half as much (large， 1ong，…)again as B. /<Et
【=A is one a half times as much (large， 1ong，…)as @Q!j7I
B.】(11)应译为:A比B多(大，长……)一半(即A是B的一倍半)。 =I1@ O9}+i
