关于冠词a连用的字母
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不定冠词的基本用法

(1) 不定冠词有a和an两种:a用于辅音音素开头的词前,an用于元音音素开头的词前.例如:a boy,a city,a girl,a useful animal ,an old man,an honest boy,a bad apple,a tall elephant

(2) 用来表示“—”的意思,但不强调数的观念,只说明名词为不特定者.即不具体说明是何人何物.例如:

A teacher is looking for you.

We work five days a week.

(3)不定冠词含有“—”的意思,但数量观念没有one强烈,在句子里边一般可以不必译出,但若有“一个”的意思则译出,例如:

—— An orange is good for you.桔子对你有好处.

—— How much is it 多少钱?

——Two yuan a kilo.二元一公斤.

(4)一般用在可数名词单数前,指人或事物的某一种类.例如:

Bill is a student.

Pass me an apple,please.

例外:I have never seen such a fine film.

(5)用在某些固定词组中.例如:

a lot of,a moment ago,a few,a little