1）倍数表示法
a.主语+谓语+倍数（或分数）+ as + adj.+ as
I have three times as many as you. 我有你三倍那么多.
b.主语+谓语+倍数（分数）+ the size (amount,length…) of…
The earth is 49 times the size of the moon. 地球是月球的49倍.
c.主语+谓语+倍数（分数）+ 形容词（副词）比较级+ than…
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%.