倍数的表示法
1)…times as…as“……是……的几倍”;
Asia is four times as large as Europe.亚洲的大小是欧洲的4倍。
2)…times +形容词/副词比较级+that:
The new building is four times higher than the old one.新楼比旧楼高4倍。
3)…times+the size/height/length/depth+of…
The earth is 49 times the size of the moon.地球是月亮大小的49倍。
The ball is twice the width of our classroom.舞厅是我们教室宽度的2倍。
4)…times+what从句：
The production now is three times what it was ten years ago.现在的生产是10年前的3倍。
[应用]选择正确答案
①After the new technique was introduced,the factory
produced_____tractors in 1988 as the year before.(MET’90)
A.as twice many B.as many twiceC.twice as many D.twice many as
②The population of China is_____than that of America.
A.larger five times B.five times larger C.five times as D.as five times
Key:①C ②B
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