英語數(shù)詞用法之倍數(shù)表示法

a. 主語+謂語+倍數(shù)(或分?jǐn)?shù))+ as + adj. + as

I have three times as many as you.我有你三倍那么多。

b. 主語+謂語+倍數(shù)(分?jǐn)?shù))+ the size (amount，length…) of…

The earth is 49 times the size of the moon.地球是月球的49倍。

c. 主語+謂語+倍數(shù)(分?jǐn)?shù))+ 形容詞(副詞)比較級+ than…

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

今年比去年糧食產(chǎn)量增加8%。

d. 還可以用by+倍數(shù)，表示增加多少倍

The production of grain has been increased by four times this year.

今年糧食產(chǎn)量增加了4倍。