高三英语第一轮复习：倍数的表示法

　　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