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英语的几种倍数表达方法

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英语的几种倍数表达方法
共四种
例:A be 倍数 as 形/副(原形) as B
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1. 表示“几倍大小(长短;数量)”,由“倍数+ the size(length,amount……)”结构组成。
例如:
The earth is forth-nine times the size of the moon. 地球是月亮的49倍大。

2. 表示“……比……大几倍”,由“倍数+形容词(副词)比较级”结构组成。
例如:
This box is three times bigger than that one. 这个盒子比那个盒子大三倍。
The grain output is 8 percent higher this year than that of last year. 今年比去年粮食产量增加8%。

3. 表示“……是……倍”,由“倍数+ as +形容词+ as +”结构组成。
例如:
Our factory is twice as big as theirs. 我们的工厂是他们的三倍。
I have three times as many as you. 我有你三倍那么多。

[注] 一倍用once,两倍用 twice。

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。