题目内容
12．_____of the students in our class is 64，and_____of them are girls．（ ）| A． | The number； one third | B． | A number； one third | ||
| C． | The number； two third | D． | A number； one second |
分析 我们班学生的数量是64人，三分之一是女孩．
解答 答案：A．考点是分数表达法．句子里的the number of…的数量，该短语做主语时，谓语动词用单数；a number of…许多…；该短语做主语时，谓语动词用复数；故排除选项B和D．在分数的表达中，分子用基数词，分母用序数词，当分子大于一时，分母加s，排除C；故选A．
点评 先把固定短语的用法掌握好，做出正确的区分；再掌握一些专项里的特殊用法，然后结合题干做出正确的选择．
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