冠詞是一種虛詞，放在名詞的前面，幫助說明名詞的含義。冠詞分不定冠詞和定冠詞兩種。a 是不定冠詞，a用在輔音之前：如a book, a man; an用在元音之前，如：an old man, an hour, an interesting book等。the是定冠詞。

一、不定冠詞的用法

1、指人或事物的某一種類。這是不定冠詞a 的基本用法。如：She is a girl. I am a teacher. Please pass me an apple.

2、指某人或某物，但不具體說明何人或何物。如：He borrowed a story-book from the library.A Wang is looking for you. 一位姓王的同志正在找你。

3、表示數量，有“一”的意思，但數的概念沒有one強烈。如：I have a mouth, a nose and two eyes.

4、用于某些固定詞組中。如：a bit, a few, a little, a lot of, a piece of, a cup of, a glass of, a pile of, a pair of, have a good time, for a while, for a long time等。

5、用在抽象名詞前，表具體的介紹——a + 抽象名詞，起具體化的作用。如：This little girl is a joy to her parents. 這女孩對她父母來說是一個樂趣。It is a pleasure to talk with you. 跟您交談真是一件愉快的事情。It is an honour to me to attend the meeting. 參加這個會，對我來說是一種榮譽。

二、定冠詞的用法：

1、特指某人或某事物。這是定冠詞the的基本用法。如：Beijing is the capital of China.The pen on the desk is mine.

2、指談話雙方都知道的人或事物。如：Where is the teacher?Open the window, please.

3、指上文提過的人或事物。如：There was a chair by the window. On the chair sat a young woman with a baby in her arms.The baby was thin.

4、用在世界上獨一無二的事物前。如：the earth, the moon, the sun。

5、用在序數詞和形容詞最高級前。如：He is always the first to come to school.Bob is the tallest in his class.

6、用在某些專有名詞前。如：the Great Wall, the Summer Palace, the Science Museum, the Children’s Palace, the Party等。

7、用在一些習慣用語中。如：on the day, in the morning , the day after tomorrow, the day before yesterday, the next year, by the way等。

8、用在江河湖海、山脈前。如：the Yellow River, the Pacific Ocean, the Alps, the Himalayas

9、用在報刊、雜志前。如：the People’s Daily, the Evening Paper, the Times 泰晤士報

10、表示某一家人要加定冠詞。如：The Browns are at home to receive visitors today. 布朗一家今天要接待客人。

11、用在形容詞前，表某一類人。如：the poor, the wounded, the living, the dead, the rich, the sick等。

12、定冠詞可以表示一事物內部的某處。如：The driver always sits in the front of the bus.

三、零冠詞：

1、專用名詞和不可數名詞前。如：China, America, Grade One, Class Two, milk, oil, water, paper, science等。

2、名詞前已有作定語用的this, that, my, your, some, any等代詞。如：Go down this street.

3、復數名詞表示一類人或事物時。如：We are students. I like reading stories.

4、節日、日期、月份、季節前。如：Teachers’ Day, Children’s Day, National Day, in summer, in July等。Today is New Year’s Day. It is Sunday. March 8 is Women’s Day.

5、在稱呼語或表示頭銜的名詞前，尤其作表語、賓補時。如：What’s the matter, Granny? We elected him monitor.

6、在某些習慣用語中的名詞前。如：at noon, at night, at first, at last, at most, at least, by bus, in bed, in time, in front of, go to school, go to bed, go to college, on foot, at table, in ink, in pencil等。

7、在三餐飯和球類運動前。如：She goes to school after breakfast every morning.We are going to play football.We usually have lunch at school.

8、科目前不加。如：We learn Chinese, maths, English and some other subjects.

【專項訓練】

1、We can’t live without ______ air.A．an B．× C．the D．some

2、——Have you seen ______ pen? I left it here this morning.——Is it ______ black one? I think I saw it somewhere.A．a; the B．the; the C．the; a D．a; a

3、I’ve been waiting for him for ______ hour and ______ half.A．×; × B．the; a C．a; the D．an; a

4、What ______ fine weather we have today!A．a B．× C．some D．an

5、Have you ever seen ______ as tall as this one?A．a tree B．such tree C．an tree D．tree

6、Children usually go to ______ school at ______ age of six.A．×; the B．a; an C．the; × D．the; the

7、______ Himalayas is ______ highest mountain in ______ world.A．×; the;× B．The; the; the C．A; a; a D．×;×;×

8、They each have ______ book. Li Hua’s is about ______ writer. Wang Lin’s is on ______ science.A．a; a; × B．the; ×; the C．×; the; × D．a; the; a

9、______ Physics is ______ science of matter and energy.A．The; × B．×; × C．×; the D．A; a

10、______ sun rises in ______ east and sets in ______ west.A．A; an; a B．The;×;× C．The; the; the D．A; the; a

KEYS

1、B air是不可數名詞。2、D 此題為97年高考題。根據句意，第一空是泛指，第一次出現；第二空仍是泛指，且表數量“－”。3、D 元音前用an。4、B weather是不可數名詞。5、A 此題為85年高考題。泛指。6、A go to school是固定短語。7、B 山脈、形容詞最高級及世界上的唯一的名詞前加定冠詞。8、A 第一、二空泛指，第三空，science是不可數名詞。9、C 第一空，科目前不加冠詞；第二空特指，有定語。10、C