地震后九寨沟景区怎样:高考英语?

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13. Americans eat _______d______ vegetables per person today as they did in 1910. (02上海春季 )
A. more than twice
B. as twice as many
C. twice as many as
D. more than twice as many
答案是d,其他的为什么不行?
句子该怎么翻译?

翻译他们说的都差不多:
美国现在人均蔬菜摄入量是1910年的两倍多.

至于为什么选第4个,主要原因是因为后面已经有了个as they did
所以前面只需要一个as

肯定型式就是 as + adj/adv + as
否定式就是 not as + adj/adv + as 或 not so + adj/adv + as

对于这种倍数,就是 倍数 + as + adj/adv + as
比如 3 times as many as
twice as big as
但是这里不可以选C,就是因为前面说的后面已经有了个as

美国现在人均蔬菜摄入量是1910年的两倍多.

至于为什么选第4个,主要原因是因为后面已经有了个as they did
所以前面只需要一个as

肯定型式就是 as + adj/adv + as
否定式就是 not as + adj/adv + as 或 not so + adj/adv + as

对于这种倍数,就是 倍数 + as + adj/adv + as
比如 3 times as many as
twice as big as
但是这里不可以选C,就是因为前面说的后面已经有了个as

美国人如今每人吃的蔬菜是1910年所吃的2倍多!

美国现在的人均蔬菜进食量是1910年时的2倍多