增加了2倍英语

XXX 比XX 多 %: XXX is more than XXXX percent.1 比 2 多30～40％: One is more than two 30 ~ 40%.

增加了3倍。

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)

不是很准确， “10 times more than……” 是“比……多10倍”的意思，这句话不是很好表达。

楼主错了吧，那照你这么说increase by once=by 100% 等于增长了0倍?

你好是直接加2，乘2是increase by one time，increase by 2 times 是乘以3

业绩比去年增长10倍The business volume has been increased 10 times compared with last year.