英语中的冠词有定冠词the和不定冠词a 、an两种：
1. 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；（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.（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,（4）一般用在可数名词单数前,指人或事物的某一种类.（5）用在某些固定词组中
2. 定冠词的用法：（1）特指某（些）人或某（些）事物.（2）指双方都知道的人或事物3）指上文提到的人或事物.4）用在世界上独一无二的事物前.例如：The sun is bigger than the moon.太阳比月亮大些.（5）用在序数词和形容词最高级前.例如：The first island is the biggest of the three.第一个小岛是三个中最大的.（7）用在形容词前表示一类人,the +形容词指的是一群人,是一种复数含义,所以其后动词应用复数形式.例如：The old are sick.
冠词练习题：
1. Tomorrow is ______ Teachers' Day and we'll make ______ card for our English teacher.
2. The bus is running about seventy miles_____ hour.
3. Mary is interested in ______ science.
4. Some people don't like to talk at ______ table.
5. Last night I went to______ bed very late.
6. Don't worry. We still have ______ little time left.
7. What ______ beautiful day! And what ______ fine weather!
8. In ______ winter it is cold in ______ Beijing and warm in ________Shanghai.
9. John is______ cleverest boy in his class.
10. We can't live without ______ water or ______ air.
11. Tomorrow Mr. Smith will leave Paris, ______capital of______ France, for Washington by______ air.
12. We were having______ lunch when they came in.
13. This is ______ book you gave me last week.
14. What did you do ______ last Saturday?
15. March 8 is ______ Women's Day.
16. If ______ weather is fine tomorrow, we will go to the park.
17. I prefer playing ______ piano to playing ______ basketball.
18. At ______ age of five, he read a lot of books.
19. Tom and Lucy are of ______ same age.
20. ______ harder we study, ______ more we learn.
冠词答案：1. ×; a 2.an 3. × 4. × 5. × 6. a 7.a; × 8. ×; ×; × 9.the 10.×; × 11. the; ×; × 12. × 13.the 14.× 15. × 16.the 17.the; × 18.the 19.the 20. The; the
