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 I)0_0JX s
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： a<>cbP
倍数增加 F g'{K%t4
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， 4d}n0b\d
more，…)than B.(②)A is n times the size (length， amount，…)of _JA)""
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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]. 3H 4T*&9;n
Eg. This book is three times as long as (three times longer than，three v6
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times the length of )that one. [Ls%nz |
这本书的篇幅是那本书的3倍(即长两倍)。 :Z_abKt
注：当相比的对象B很明显时，than(as，of)B常被省去。 +qqCk
二、increase to n times(④) hst Ge>f[6
increase n times/n-fold(⑤) UlKg2p
increase by n times(⑥) "?W8 o[c +
increase by a factor of n(⑦) `Hv"^o
以上四式均应译为：增加到n倍(或：增加n-1倍)。 E @Rb+8},"
Eg. The production of integrated circuits has been increased to three times %|f@WxNrU
as compared with last year. F[F
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The output of chemical fertilizer has been raised five times as against |
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l986.化肥产量比1986年增加了4倍。 wAzaxeV=
That can increase metabolic rates by two or three times. jZvIqR /
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)。 g2 mq?q(g
The drain voltage has been increased by a factor of four. "GJ.`Hj
漏电压增加了3借(即增加到原来的4倍)。 HzuG- V
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 :! fY;c?
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： Zw%:mZ N
Eg. A record high increase in value of four times was reported. /Bk`3~]E>
据报道,价值破记录地增长了3倍。 s.KfMJ"u[
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the $"}*#<Z
machines has been more than trebled or quadrupled.这些机器的效率已提高了2倍或3倍多。
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五、此外，英语中还有一种用again而不用倍数词来比较倍数的方法，如： 1-.i^ Hal
A is as much (large，long，…)again as B.(=A is twice as much iV\*7
(large，long，…)as B.(⑩)应译为：A比B多(大，长，……)1倍。 /c4$m3?]
A is half as much (large， 1ong，…)again as B. )oM%
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【=A is one a half times as much (large， 1ong，…)as c]qh)F$s8
B.】(11)应译为:A比B多(大，长……)一半(即A是B的一倍半)。 f 3h]t0M
