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 e?eX9yA7F
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：
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倍数增加 lO5*n|Ic,
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， %2`geN<
more，…)than B.(②)A is n times the size (length， amount，…)of Hp?uYih0
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]. TrC :CL
Eg. This book is three times as long as (three times longer than，three _#rE6./@q
times the length of )that one. ZsepTtY
这本书的篇幅是那本书的3倍(即长两倍)。 UA$Xa1
注：当相比的对象B很明显时，than(as，of)B常被省去。 x\2N
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二、increase to n times(④) l/o
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increase n times/n-fold(⑤) TNK~ETE 4
increase by n times(⑥) pxi/ ]6p
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increase by a factor of n(⑦) u[ 2B0a
以上四式均应译为：增加到n倍(或：增加n-1倍)。 3#
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Eg. The production of integrated circuits has been increased to three times <zE~N~;
as compared with last year. (L7 @ez
The output of chemical fertilizer has been raised five times as against sFWH*k dP?
l986.化肥产量比1986年增加了4倍。 !w -`:
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That can increase metabolic rates by two or three times. @&Lt IN#
那可使代谢率提高到原来的2倍或3倍(即提高1倍或2倍)。 5/"&C-t
The drain voltage has been increased by a factor of four. "I`g(q#Uo
漏电压增加了3借(即增加到原来的4倍)。 T~(AXwaJ
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 ^RO_B}n3
三、There is a n-fold increase/growth…(⑧)应译为：增加n-倍(或增至n倍)。这个句型还有其它一些形式： ($A0u mW1%
Eg. A record high increase in value of four times was reported. qD/X% `>Q
据报道,价值破记录地增长了3倍。 T)"LuC#C
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the nt
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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。 y%
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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： /WX
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A is as much (large，long，…)again as B.(=A is twice as much 8F*"z^vD=
(large，long，…)as B.(⑩)应译为：A比B多(大，长，……)1倍。 C].w)B
A is half as much (large， 1ong，…)again as B. 5 EqC.g .
【=A is one a half times as much (large， 1ong，…)as >s+TD4OfY
B.】(11)应译为:A比B多(大，长……)一半(即A是B的一倍半)。 T nG=X:+=
