倍数表达法小结.pptVIP

* 倍数表达法小结 一.由“倍数+ as +形容词（副词）的原形+ as ”结构组成，表示“A是B的……倍”。例如： 1.Asia is four times as large as Europe． 2.The plane flew ten times as high as the kite．飞行高度 3.This tree is three times as tall as that one. 高考示例： 1.Ten years ago the population of our village was ____ that of theirs. as twice large as B. twice as large as C. twice as much as D. as twice much as B 2. This big stone is ____ that one. three time as heavy as B. three times as heavy as C. three time as heavier as D. heavy as three times as 3. His father is ____ as he. two times as old B. two time as old C. twice as old D. as twice old B C 二. 由“倍数+as+形容词+名词复数（不可数名词）+as”结构组成，表示“A是B的……倍”。此结构最常考“倍数+ as+much+不可数名词+as”和“倍数+ as+many+复数名词+as”两种用法。例： 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. 高考示例： 1. It is reported that the USA uses ____ energy as the whole of Europe. as twice B. twice much C. twice much as D. twice as much. 2. Americans eat ____ as they actually need every day. A. twice as much protein B. twice protein as much twice C. twice protein as much D. protein as twice much D A 3. Americans eat ____ vegetables per person today as they did in 1910. A. more than twice B. as twice as many C. twice as many as D. more than twice as many 4. After the new technique was introduced, the factory produced ____ cars in 2002 as the year before. A. as many twice B. as twice many C. twice many as D. twice as many D D 三. 由“倍数+as +形容词+a (an)+名词单数+as” 结构组成，表示“A是B的……倍”。例如： 1. The boss provided Jim with four times as big an apartment as yours. 2. This is two hundred times as expensive a car as a bike. 高考示例： 1. All the second-hand goods are sold at ___ before. A. twice as lower price as B. as twice low price than C. twice as low a price as D. twice low