—Is it        apple?

—Yes, it is.

A. a                     B. an                 C.  /

 

【答案】

B

【解析】

試題分析:根據(jù)后面單詞apple,詞首音素,可知用冠詞an,選B.

考點:不定冠詞用法

點評:不定冠詞有兩個.根據(jù)后接單詞詞首音素的不同采用不同的形式.當詞首音素為元音時,用an;當詞首音素為輔音時,用a.實際中也可以根據(jù)首字母來判斷,這在大多數(shù)情況下不會出錯,但是個別單詞需要注意,如:hour,小時.

 

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