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： FhP $R}F
倍数增加 t6q7 w
(一) A is n times as great(long，much，…)as B.(①). w C>}9OM
A is n times greater (longer， more，…)than B.(②).
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A is n times the size (length， amount，…)of B.(③). &gLXS1O
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]. xc
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Eg. This book is three times as long as (three times longer than，threetimes the length of )that one. xe4`D >LUo
这本书的篇幅是那本书的3倍(即长两倍)。 .DR*MQI9
注：当相比的对象B很明显时，than(as，of)B常被省去。
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(二)increase to n times(④). m@i](1*T|
increase n times/n-fold(⑤). 2^X<n{0N)
increase by n times(⑥). ] \1H=g%Ou
increase by a factor of n(⑦). +; Pkpuu
以上四式均应译为：增加到n倍(或：增加n-1倍)。 Vl^p3 f[
Eg. The production of integrated circuits has been increased to three timesas compared with last year. |jI|} ,I
集成电路的产量比去年增加了两倍。 :@b=;
Eg. The output of chemical fertilizer has been raised five times as againstl986. j6d{r\!$4
化肥产量比1986年增加了4倍。 ms&6N ']
Eg. That can increase metabolic rates by two or three times. < ZG!w^
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)。 lqcPV) n
Eg. The drain voltage has been increased by a factor of four. \"a~~Koe
漏电压增加了3借(即增加到原来的4倍)。 >~l^E!<i-u
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 gXj3=N(l
(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： 6{w'q&LYcE
Eg. A record high increase in value of four times was reported. vX?C9Fr 2
据报道，价值破记录地增长了3倍。 )GfL?'Z
(四)double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨). @rv)J[7Y&
Eg. The efficiency of the machines has been more than trebled or quadrupled. pK"iTc#\X
这些机器的效率已提高了2倍或3倍多。 L=@8Z i!2<
(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： {Ia1Wd 8n
A is as much (large，long，…)again as B.(= A is twice as much (large，long，…)as . J'%W_?wZ
B.(⑩) u f1
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应译为：A比B多(大，长，……)1倍。 bt"5.nm
A is half as much (large， 1ong，…)again as B. $Ji;zR4,
「= A is one and a half times as much (large， 1ong，…)as B.」(11). ,: {+-v(
应译为：A比B多(大，长……)一半(即A是B的一倍半)。 a`D`v5G t
