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 dep"$pys>
表述或对比倍数方面存在着语言与思维差异。现将常 用的英语倍数句型及其正确译法归纳如下： 8%xBSob{j
倍数增加 1i'y0]f
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， GQQ p(% T
more，…)than B.(②)A is n times the size (length， amount，…)of S2n X{=
B.(③)以上三句都应译为;A的大小(长度，数量，……)是B的n倍[或A比B大(长，多，……)n-1倍]. W cm8,?*
Eg. This book is three times as long as (three times longer than，three * -{|m1P
times the length of )that one. j2.7b1s
这本书的篇幅是那本书的3倍(即长两倍)。 ,LxkdV
注：当相比的对象B很明显时，than(as，of)B常被省去。 NK(_ &.F
二、increase to n times(④) n
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increase n times/n-fold(⑤) m7u`r(&
increase by n times(⑥) ?,8+1"|$A]
increase by a factor of n(⑦) X8N9*v y
以上四式均应译为：增加到n倍(或：增加n-1倍)。 qd#7A ksm
Eg. The production of integrated circuits has been increased to three times k}NM]9EAE
as compared with last year. a(ITv roM/
The output of chemical fertilizer has been raised five times as against " Aw)0a[j1
l986.化肥产量比1986年增加了4倍。 %~gI+0HK
That can increase metabolic rates by two or three times. CjP<'0g T
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)。 qMA-#
The drain voltage has been increased by a factor of four. XoL DqN!
漏电压增加了3借(即增加到原来的4倍)。 F"O\uo:3
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 ,]W|"NUI
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： 0y?;o*&U\
Eg. A record high increase in value of four times was reported. C H
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据报道,价值破记录地增长了3倍。 wJCw6&D,/
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the P)J-'2{
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。 zB~ < @
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： T<? kH
A is as much (large，long，…)again as B.(=A is twice as much 6$'*MpYF4
(large，long，…)as B.(⑩)应译为：A比B多(大，长，……)1倍。 a.}#nSY
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A is half as much (large， 1ong，…)again as B. UeLO `Ug0;
【=A is one a half times as much (large， 1ong，…)as 6w, "i#E!
B.】(11)应译为:A比B多(大，长……)一半(即A是B的一倍半)。 VJ&<6
