11．-What does your brother do，Tom？
-Oh，he's _______ officer in _______ army．（　�。�
A．the； anB．a； theC．an； aD．an； the

分析 -你哥哥是做什么的，Tom？
-啊，他是軍隊(duì)里的一個(gè)軍官．

解答 答案：D．
本題考查冠詞的用法．根據(jù)語境可知，表示數(shù)量為"一"用a或者an來表示，officer首字母o的音素為元音音素，所以用不定冠詞an來表達(dá)．the army是特指軍隊(duì)，固定表達(dá)方式．故選D．

點(diǎn)評(píng) 做這種題時(shí)，根據(jù)語境和題意，首先確定考查的是冠詞的用法；再就是要注意不定冠詞a，an表示"一個(gè)"，泛指；同時(shí)要注意元音音素前面要加不定冠詞an．再次注意軍隊(duì)的固定表達(dá)方式．

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