Question

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

1. A.
   as one third as
2. B.
   one third as much as
3. C.
   one third more than
4. D.
   as one third much as

Answer 1

B
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。