题目内容

7．Though he was ______ eight-year-old boy then，he had three big apples at ______ time．（　　）
A．an； theB．an；/C．aD．an； a

分析 尽管那时他是一个8岁的男孩，但他可以一次吃掉3个大苹果．

解答 答案：D 根据关键词was可知这里强调一个男孩应用a，由于紧挨着冠词的eight的首字母是元音音素，所以冠词a应变成an； 结合语境应是一次吃掉三个苹果，强调一次应该用冠词a，为at a time．故选D．

点评 此题考查冠词的用法．做题时抓住句中的关键词并结合句意准确判断出应用哪个冠词．并要注意细节，尤其是冠词后面紧挨的首字母是元音音素的情况．

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