(二) 正误辨析
［误］This building is an university.
［正］This building is a university.
［析］a用于以辅音音素开始的单词前，而an用于以元音音素开始的单词前，而不是元音字母开头的单词前。university的第一个音素是［j］，所以用a而不要用an。又如：There is a “n” in the word.是错句，应为：There is an “n”in the word.因字母n的发音的第一个音素是元音。要注意的还有hour因其第一个字母h不发音，所以应该用an hour。例如：
I need an hour to finish the work.
It is a useful dictionary.
It is a European country.
I bought a used car.
