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 TJjcX?:(
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： Z7> pz:,
倍数增加 mux_S2x9m\
一、 A is n times as great(long，much，…)as B.(①)A is n times greater (longer， B7HN NX
more，…)than B.(②)A is n times the size (length， amount，…)of o,}`4_N||
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]. l-4+{6lz
Eg. This book is three times as long as (three times longer than，three $ <'i+kK
times the length of )that one. >#~!03
这本书的篇幅是那本书的3倍(即长两倍)。 c4H5[LPF
注：当相比的对象B很明显时，than(as，of)B常被省去。 m? wPZ^u
二、increase to n times(④) _gDEIoBp
increase n times/n-fold(⑤) \o}m]v
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increase by n times(⑥) ^U1 @
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increase by a factor of n(⑦) #2AK O/
以上四式均应译为：增加到n倍(或：增加n-1倍)。 . &Tcds
Eg. The production of integrated circuits has been increased to three times ;;
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as compared with last year. W>[0u3
The output of chemical fertilizer has been raised five times as against zX=K2tH
l986.化肥产量比1986年增加了4倍。 l@:|OGD;8
That can increase metabolic rates by two or three times. }C6RgE.6<
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)。 l6kq P
The drain voltage has been increased by a factor of four. M `m-@z
漏电压增加了3借(即增加到原来的4倍)。 z'' ITX)oG
注：在这类句型中increase常被raise，grow，go/step up，multiply等词所替代。 z#DgoA
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： (t
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Eg. A record high increase in value of four times was reported. c_p7vvI&c0
据报道,价值破记录地增长了3倍。 A!xx#+M
四、double (增加1倍)，treble(增加2倍)，quadruple(增加3倍)。(⑨)Eg. The efficiency of the
AW[_k%
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。 l:Hm|9UZ
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： a8Va3Y
A is as much (large，long，…)again as B.(=A is twice as much E
