倍数的表达法
倍数表达法是高中英语教学的重点,也是历届高考的热点。当我们要表达甲是乙的几倍时,通常用下面三个句型来表示:
1. A+倍数+形容词或副词的比较级+than+B,表示A比B大(长、高、宽等)多少倍。如:
This rope is twice longer than that one. 这根绳子是那根绳子的两倍长(比那根绳子长一倍)。
This hall is five times bigger than our classroom. 这个大厅比我们的教室大四倍(是我们教室的五倍)。
The car runs twice faster than that truck. 这辆小车的速度比那辆卡车快一倍(是那辆卡车的两倍)。
2.A+倍数+as+形容词或副词的原级+as+B,表示A正好是B的多少倍。如:
Asia is four times as large as Europe. 亚洲的面积是欧洲的四倍。
This big stone is three times as heavy as that one. 这块大石头的重量是那块的三倍。
The plane flew ten times as high as the kite. 那架飞机的飞行高度是那只风筝的十倍。
3. A+倍数+the size/height/length/width, etc+of+B,表示A正好是B的多少倍。如:
This street is four times the length of that one. 这条街是那条街的四倍长。
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