英语分数的表达 英语倍数和分数的表达法，你掌握了吗

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1.倍数表示法

a. 主语+谓语+倍数+ 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+ 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+ 形容词比较级+ than…

The grain output is 8 percent higher this year than that of last year.

d. 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.

2.分数表示法

构成：基数词代表分子，序数词代表分母。分子大于1时，分子的序数词用单数，分母序数词用复数：1/3 one-third ；3/37 three and three-sevenths