1. 不定冠詞a與an的用法；
2. 定冠詞the的用法；
3. “零”冠詞
考點講解
冠詞在英語中只有3個詞，分為兩類：不定冠詞a與an，定冠詞the。 a用在以輔音開始的單數名詞前，an用于以元音開始的單詞前。不定冠詞用來表示一類事物中泛指的某一事物，而定冠詞則用于特指的某一個或某些事物，可用于不可數名詞、可數名詞單數及可數名詞復數前。這三個詞在英文中出現頻率最高，其用法各異，在學習中要予以一定的注意，以便很快正確而熟練地應用它們。
定冠詞（a，an）和定冠詞（the）兩種。
一 不定冠詞的用法
不定冠詞用在單數名詞前面，表示”一”或”一個”。冠詞a用在以輔音開頭的單詞之前，an用在以元音開頭的單詞之前。例如：
This is a book．
There is a chair in the room．
My mother is an English teacher．
Mr Green bought an old car last week．
Kate is an American girl．
There are sixty minutes in an hour．
That is a useful book．
1． 當我們第一次提到某人或某物時，用不定冠詞a(an)起介紹作用。例如：
What does your father do？He is a doctor．
There is a new book on the desk．
Thomas Edison was a great American inventor．
2． 用在單數名詞前表示人或事物的某一類
A student should study hard for the people.
This is an apple.
A plane is much faster than a car．
A teacher teaches students.
3． 相當于one，表示"一"
He will be back in a day or two.
A friend of mine visited me yesterday.
Here is a seat for you.
4． 相當于a certain 或 one like，指某人或某物，但不具體說明
A teacher from Shanghai is coming to give us a talk this afternoon.
My mother once worked in a school.
A boy is waiting for you outside.
5． 相當于any，表示"種類"
A triangle has three angles.
6． 相當于the same，表示"相同"
Birds of a feather flock together.
7． 相當于every 或 per，表示"每"
The car is running 50 miles an hour.
All of us have six classes a day.
He drives a car at forty miles an hour.
8． 用于形容詞最高級前，無比較含義
This is a most useful book.
9． 用于序數詞前，表示"再"
Please give me a second chance.
10． 用于習語中
once upon a time, catch a cold, take a look, take/have a rest, make a mistake about sth. For a while, for a moment, in a word, wait a moment, in a hurry, get in a word, make a face, have a try, want a go, have a word with sb. Live a happy life, take an active part in, have a match, a little, give a lesson, have a talk, have a fever, have a good time, have/take a walk, have a headache(toothache…) have a nice trip, all of a sudden, as a matter of fact,
二 定冠詞的用法
1. 特指某些人或某些事物, 例如：
The book on the desk is mine．
Beijing is the capital of China.
2. 指談話雙方都知道的人或事物.例如：
Open the window, please.
Let's meet on the road outside the school gate．
What do you think of the film?
3. 指上文提到的人或事物。例如：
I saw a boy. The boy was crying.
I have a bird. The bird is white.
I bought a coat. This is the coat.
4. 用于世界上獨一無二的事物前面。例如：
We have friends all over the world.
Which is the biggest, the sun，the moon or the earth?
The moon goes around the earth.
5. 用于單數名詞前表示一類人或事物
The horse is a useful animal.
The apple is a kind of fruit.
6. 用于序數詞前
January is the first month of the year．
The first lesson is easy.
7. 用于形容詞前
最高級前
Who is the tallest student here?
Winter is the coldest season of the year.
Jim's box is the biggest of all．
表示某一類人或事物
The young should respect the old.
表示某種抽象概念
The beautiful never dies.
8. 用于某些專有名詞前
江河the Yangtze River, the Suez Canal
山脈the Alps, the Tianshan Mountains
海洋the Pacific Ocean, the Yellow Sea, the Black Sea
湖泊the West Lake
群島the Hawaiian Islands
報紙、雜志the Times, the People's Daily
巨大建筑the Great Wall, the British Museum
朝代、時代the Stone Age, the Ming Dynasty
組織機構the United Nations
9. 用于含有普通名詞的專有名稱前
the United States of America
the People’s Republic of China
the United Nations
10. 用于姓氏復數形式前，表示一家人
The Browns are kind to us.
The Kings are having dinner.
The Turners are watching TV.
11. 用在樂器的名稱前
He can play the piano.
She likes to play the violin and the flute.
12. 用于逢十的復數數詞前，表示年代
in the 1990's
13. 用于某些習語
on the right, by the way, go to the cinema (theatre, concert…), in the frontof , in the middle of, at the beginning, in the end, in the daytime, on the one hand…on the other hand, to tell the truth, to go to the doctor, in the morning，in the afternoon，in the evening，go to the cinema