英语翻译英语里的“XXX 比XX 多 % ”比较级怎么翻译,什么结构?1 比 2 多30～40％,怎么翻译?

英语翻译
英语里的“XXX 比XX 多 % ”比较级怎么翻译,什么结构?
1 比 2 多30～40％,怎么翻译?

His books are 30% more than mine.
倍数的表示法
表示三以上的倍数用times,但表示两倍（汉语中的一倍实际上也指两倍）时则用twice,double,duple,twofold,as…again as表示.译为“翻一番”或“为…的两倍”.3倍常用three times,triple,threefold表示,译为“增加2倍,增至三倍”或“为…的3倍”.4倍用quadruple,基数词＋times,基数词＋fold表示,译为“增加3倍,增至4倍”或“为…的4倍”.例如：
He earned double the usual wage in holiday.他在假期里挣了比平时多1倍的工资.
This bridge is as long again as that bridge.这座大桥的长度是那座大桥的2倍.
They have produced four-fold as many laptops as they did last year.他们今年生产的笔记本电脑相当于去年的4倍.
Their grains have trebled (tripled) this year.他们的粮食今年增加了2倍（是…的三倍）.
1) 主语+谓语+ X times + as + adj.+ as
这个句型译为：① A…是B的X倍（或净增加X－1倍）.
例如：This pen (A) is twice as expensive as that pen (B).
这只钢笔(A)的价格是那只钢笔(B)的2倍.（即A比B贵一倍）
I have three times as many as you.我有你三倍那么多.（我的比你的多两倍）
This box is four times as heavy as that box.这个盒子比那个盒子重4倍.
2）主语+谓语+ X times+ the size (amount,width,breadth,level,value,velocity,length…) of…
这个句型表示净增加“1倍,是…的2倍”例如：
The earth is 49 times the size of the moon.地球是月球大小的49倍.
3）主语+谓语+ X times + 形容词（副词）比较级+ than…
这个句型表示的数为净增加数.例如：
The grain output is one time higher this year than that of last year.
今年比去年粮食产量增加一倍.
4）还可以用by+倍数,表示增加多少倍
The production of grain has been increased by four times this year.
今年粮食产量增加了4倍.
注意:倍数表达法的几点注意事项
1) 增加
倍数的增加
increase by 5 times 增加了5倍
increase 5 fold (times) 增加到5倍
increase by a factor of 5 增加4倍
multiply 5 times 增加到5倍(增加了4倍)
4 times as great as 为…的四倍
4 times more than 比…多四倍（增加了5倍）
twice as long as 两倍于（比…长1倍）
2）减少
倍数的减少
decrease by 20% 减少了20％
decrease to 20% 减少到20％
decrease by a factor of 5 减少了4/5（减少到1/5）
decrease 3 times 减少到1/3(减少了2/3)
twice less than 为…的1/3 (比…减少2/3)