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：
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倍数增加 dUL S^i@@
(一) A is n times as great(long，much，…)as B.(①). -9+ se
A is n times greater (longer， more，…)than B.(②). jRQ+2@n{E
A is n times the size (length， amount，…)of B.(③). Tls a%pn
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]. &ab|2*3?X
Eg. This book is three times as long as (three times longer than，threetimes the length of )that one. l-O$ m
这本书的篇幅是那本书的3倍(即长两倍)。 s& tE_
注：当相比的对象B很明显时，than(as，of)B常被省去。 h @/; `E[
(二)increase to n times(④). b2) \
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increase n times/n-fold(⑤). P kUd~c
increase by n times(⑥). Xs$Uf i
increase by a factor of n(⑦). r`M6 !}oa
以上四式均应译为：增加到n倍(或：增加n-1倍)。 vq'k|_Qi=
Eg. The production of integrated circuits has been increased to three timesas compared with last year. w *!wQ,o
集成电路的产量比去年增加了两倍。 46x.i;b7
Eg. The output of chemical fertilizer has been raised five times as againstl986. p] &j ;H.
化肥产量比1986年增加了4倍。 \caH pof
Eg. That can increase metabolic rates by two or three times. d8x%SQ!V
那可使代谢率提高到原来的2倍或3倍(即提高1倍或2倍)。 Z" v
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Eg. The drain voltage has been increased by a factor of four. ;_"U "?h_J
漏电压增加了3借(即增加到原来的4倍)。 B$a-og(
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 \:_3i\2p
(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： q{' ~+Nq
Eg. A record high increase in value of four times was reported. M\oVA=d\0
据报道，价值破记录地增长了3倍。 &t}?2>:
(四)double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨). t~p
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Eg. The efficiency of the machines has been more than trebled or quadrupled. Akk
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这些机器的效率已提高了2倍或3倍多。 ^twivNB
(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： T3,1m=
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A is as much (large，long，…)again as B.(= A is twice as much (large，long，…)as . &0
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B.(⑩) %w}gzxN^
应译为：A比B多(大，长，……)1倍。 5J .0&Dda
A is half as much (large， 1ong，…)again as B. !] koSw}
「= A is one and a half times as much (large， 1ong，…)as B.」(11). KtN&,C )lJ
应译为：A比B多(大，长……)一半(即A是B的一倍半)。 4
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