不定冠词a和an,用来泛指事物,说明其名称或种类。其用法如下:
1.a用于以辅音音素开头的单词前,an用于以元音音素开头的单词前。
a book一本书 an apple一只苹果
2.当第一次提到某人或某物时,用a 或 an 起到介绍的作用。
-What’s this?这是什么?
-It's a bike.它是自行车。
This is Mr.Chen.He is an actor.
这个是陈先生,他是一位演员。
3.指某人或某物,但不具体说明何人或何物;
A boy is looking for you.一个男孩在找你。
4.表示数量,有“一”的意思,但数的概念没有 one 强烈;
I have a mouth,a nose and two eyes.我有一张嘴,一个鼻子和两只眼睛。
5.表示“每一”,相当于every;
Lucy and I go to school five days a week. 我和露西每周上五天学。 6.用在序数词前,表示“又一”“再 一”;
Mr. and Mrs.White had a daughter called Jane.Then they had a second child -a son.怀特夫妇有一个女儿名叫简。不久,他们又有了第二个小孩,一个儿子。
7.使物质或抽象名词具体化,表示“一次”“一种”“一场”等;
It's a pleasure to talk to you.
与你交谈很愉快。
8.用于可视为一体的两个名词前。
a knife and fork一副刀叉
9.用在某些固定词组中。
a bit 一点儿 a few 一些
a lot of许多 a little一点儿
中考链接
( )1.(2018广东)_______new study says that going to _________ bed late is harmful to our health.
A./;/ B.A;/ C.A;the D.The;the
( )2.(2017广东)I went to supermarket to buy____birthday gift for my aunt yesterday.
A.an;a B.a;a C.the;/ D./;the
( )3.(2016广东)Brazil,_______ country in Southern America,will hold ______31st Olympic Games in August,2016.
A.a;a B.a;the C.the;a D.the;the
练习答案:1.B 2.B 3.B
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