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【考点一】倍数表达法
表示倍数的句型：
(1)A is+倍数+比较级+than+B
(2)A is+倍数+as+原级+as+B
(3)A is+倍数+the+名词(size，length，height 等)+of+B
(4)A is+倍数+that+of+B
(5)A is+倍数+what 引导的名词性从句
①This building is three times higher than that one.
This building is three times as high as that one.
This building is three times the height of that one.
这个建筑物是那个建筑物的3倍高。
②The output of this year is 3 times that of 2008.
=The output of this year is 3 times what it was in 2008.
今年的产量是2008年的三倍。
③After the new technique was introduced，the factory produced twice as many cars in 2008 as the year before.
自从新技术被引进以后，这家工厂2008年生产的小汽车是上一年的两倍。
【经典考题】
1.(When you study the local map, you’ll find this town is________.
A.twice the size of that one
B.twice as a large town as that
C.twice as larger as that one
D.twice as larger a town as that
欣瑞专家解析：句意为：当你研究当地的地图时，你会发现这座城镇是那个的两倍大。倍数的表达方式：A is +倍数+the+名词(如size/length)+of B;B项中不定冠词位置错误;C、D项中as后应用形容词原级。
答案： A
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