來源:網絡資源 2022-10-17 17:39:04
不定冠詞的用法
a 用于輔音音素起首的單詞前,an 用于元音音素起首的單詞前。
1、當第一次提到某人或某物時,用 a 或 an 起介紹作用,如:
What is this? It is a bus.
Who is she? She is a doctor.
2、表示泛指一類人或物
A snake is a cold-blood animal; A plane is a machine that can fly.
3、表示某一類人或事物的任何一個,如:
She is a teacher;That is an apple;There is an elephant in the zoo.
4、可用于某些詞組,是該詞組不可缺少的組成部分。
如: a long time,a little,a few,at a time,have a try,take a chance
5、表示“每一個”的意思。
如:three times a day
6、可用于抽象名詞之前,使抽象名詞具體化。
如: I am quite at a loss; The little child is a joy to his parents.
7、用于物質名詞之前,使物質名詞普通化。
如: He drew out a tin of pine cone. They made a fire to get warm.
注意:
1、不定冠詞 an 用在以元音(不是字母,而是發(fā)音)起首的名詞或其他以元音起首的詞之前,不定冠詞 a 用在以輔音起首的名詞或其他以輔音起首的詞之前。
2、u 和 h 有時在單詞中發(fā)元音,有時卻讀作輔音或不發(fā)音。如:
I have been waiting for an hour;
He is an honest young fellow;
A hammer is a useful fool.
3、英語中有些字母,如a, e, i, o, f, h, l, m, n, r, s, x。由于它前頭第一個音是元音,所以在單獨使用或作縮略詞的第一個字母時,應使用“an”,如:
There is an “n” in the word “no”.
An MP means a member of parliament.
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