题目内容
12．My father has a brother and a sister．so I have ______ uncle and ______ aunt．（ ）| A． | a，a | B． | an，an | C． | a，an | D． | an，a |
分析 我的爸爸有一个哥哥（弟弟）和一个姐姐（妹妹），所以我有一个伯伯（叔叔）和一个姑姑．
解答 答案：B．
a 用于辅音音素前，an 用于元音音素前．而uncle['??k（?）l]和aunt[ɑ?nt]的读音的第一个音素为元音音素，所以用an，故选B
点评 本题考查a/an的on用法，a 用于辅音音素前，an 用于元音音素前，知道单词的读音可选出正确答案．
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