Question

On the international market, the price of petroleum has been falling down, which is now _____ it used to be.

A．as one third as	B．one third as much as
C．one third more than	D．as one third much as

Answer 1

B

解析试题分析：考查倍数表达法。本题中的倍数是分数的形式one third三分之一；倍数表达有四种：1. “A+倍数+形容词或副词的比较级+than+B”， 2.“A+倍数+as+形容词或副词的原级+as+B”， 3. “A+倍数+the size/height/length/width， etc+of+B”， 4. “……times+what+从句”。本题使用了第2种；句意：在国际市场上，原油的价格已经下降了，现在的几个是原来的3分之一。故B正确。
考点：考查倍数表达法
点评：倍数表达要牢记，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）。
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。
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。
4. “……times+what+从句”。如：
The production is now three times what it was ten years ago. 现在的产量比十年前增加了两倍。