题目

She did it ________ it took me.   A. one third the time      B. the one-third time     C. one-third a time  D. a one-third time   答案：A   解析: 倍数的表达一般有三种情况，即“倍数+as…. as”，“倍数+比较级+than”，和“倍数+限定词+名词”。这题考到了第三种情况。“one third” 表 示“三分之一”。整句意思是：她做这件事所花的时间是我所花时间的三分之一。再比如：Mice can eat grain 500 times their weight in one year.  

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