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 ]@ms jz'
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： O FlY"O S[
倍数增加 ^+dL7g?+
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， i~*#z&4A+
more，…)than B.(②)A is n times the size (length， amount，…)of ,HW[l.v
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]. ?CuwA-j
Eg. This book is three times as long as (three times longer than，three (M t-2+"+
times the length of )that one. s !HOrhV
这本书的篇幅是那本书的3倍(即长两倍)。 eq36mIo
注：当相比的对象B很明显时，than(as，of)B常被省去。 hzy#%FaB
二、increase to n times(④) WNV}@
increase n times/n-fold(⑤) &;%LTF@I,
increase by n times(⑥) xR5zm %\
increase by a factor of n(⑦) ~jOk?^6
以上四式均应译为：增加到n倍(或：增加n-1倍)。 {c AGOx wd
Eg. The production of integrated circuits has been increased to three times RZ:= ';
as compared with last year. `CEHl &w
The output of chemical fertilizer has been raised five times as against ]KRw[}z
l986.化肥产量比1986年增加了4倍。 Eg#WR&Uq"
That can increase metabolic rates by two or three times. ;[[oZ
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)。 (wZ/I( 4
The drain voltage has been increased by a factor of four. kG3m1: :
漏电压增加了3借(即增加到原来的4倍)。 .OSFLY#[?
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 :^992]EBEj
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： h2m@Q={
Eg. A record high increase in value of four times was reported. 7,EdJ[CR$
据报道,价值破记录地增长了3倍。 6{ TUs>~
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the 8{4jlL;"`?
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。 #\$AB_[ot>
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： E4N{;'
A is as much (large，long，…)again as B.(=A is twice as much NN@'79x
(large，long，…)as B.(⑩)应译为：A比B多(大，长，……)1倍。 phqmr5s^ H
A is half as much (large， 1ong，…)again as B. JY6^pC}*
【=A is one a half times as much (large， 1ong，…)as Z+G/==%3#,
B.】(11)应译为:A比B多(大，长……)一半(即A是B的一倍半)。 <e@+w6Kp'7
