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1、倍数表达法小结倍数表达法小结一一. 由由“倍数倍数+ as +形容词（副词）的原形容词（副词）的原形形+ as ”结构组成，表示结构组成，表示“A是是B的的倍倍”。例如：1.Asia is four times as large as Europe2. He walks twice as fast as his little son.二二. 由由“倍数倍数+as+形容词形容词+名词复数（不名词复数（不可数名词）可数名词）+as”结构组成，表示结构组成，表示“A是是B的的倍倍”。此结构最常考此结构最常考“倍数倍数+ as+much+不可数名词不可数名词+as”和和“倍数倍数+ as+many+复
2、数名词复数名词+as”两种用法。两种用法。例：例：1. The workers have produced twice as much cotton this year as they did two years ago. 2. The library of our school has six times as many books as theirs. 三三. 由由“倍数倍数+as +形容词形容词+a (an)+名词名词单数单数+as” 结构组成，表示结构组成，表示“A是是B的的倍倍”。例如：例如：1. The boss provided Jim with four times as bi
3、g an apartment as yours. 2. This is two hundred times as expensive a car as a bike. 四四. 由由“倍数倍数+形容词（副词）比较级形容词（副词）比较级+than”结构组成，表示结构组成，表示“A比比B大或重大或重等几倍等几倍”。例如：例如：1.The Yangtze River is almost twice longer than the Pearl River. 2.The car runs twice faster than that truck五五. 由由“倍数倍数+ the size（length, w
4、idth, height, weight, age, amount，）of”结构组成，表示结构组成，表示“A是是B的几倍的几倍大小（长短；数量等）大小（长短；数量等）”。此类结构中此类结构中一定要注意不要漏掉名词前的一定要注意不要漏掉名词前的the。例例：1. The earth is forth-nine times the size of the moon. 2. This hill is four times the height of that small one六六.由由“倍数倍数+what 从句从句”结构组成，表结构组成，表示示“A是是B的的倍倍”。例如：1. The length of the road is twice what it was last year. 2. The grain output is three times what it was last year.
