冠词：a an the

英语中把a，an和the叫做冠词，他们一般在句子中不单独做句子的成分，通常是放在名词的前面，起修饰和限制名词的作用。

a和an表示数量“一”或者泛指，the表示特指，不管什么时候 在同一个名词前面，一般只能出现他们三个中的一个做修饰。

用法：

1.       一般情况下，句子中的名词如果是可数单数名词，前面都要用a或者an，表泛指例如

He is a student.                Lucy is a beautiful girl.

Please give me a book.          I want a new car.

2.     当需要表示数量“一”的时候，需要用a或者an，例如：

This is a new telephone.

He gave me a book.

3、 a和an用法一样，如果后面的词是元音开头的时候用an，其他时候用a，例如

an apple   an egg   an orange   an old man  

a teacher  a room  a friend  a company

4、 下面的情况可以不用a 或者an

1）如果句子中的名词是复数，就不能用a或者an，例如：

They are students.（students是复数名词）

Lucy and Lily are beautiful girls.（girls是复数名词）

Please give me some milk.(milk是不可数名词)

       2）如果前面已经有代词修饰，(比如前面已经有he, she, my, our, your, their, this, that, the等)就不用a或者an，例如：

This is his room.       That is our big house.

Is this your car?        I want this new telephone.

3）在国家、语言、人名前面不能用a或者an，例如：

                   He is Chinese.        We speak English.     The boy is Tom.

第二周课堂作业（二）5.16 (用a或者an填空，不需要的地方划“X”)

1.         This is_____ pear ,that is ______apple.

2.         Do you have _______ house in Wujiang?

3.         He sent me ______ this ticket yesterday.

4.         Is this ____orange? It is ____ small orange.

5.         Please give me ____cup. It’s ____ my cup.

6.         6.I have ___  sister, ___ my sister is beautiful.

7.         I’m from ____Japan, I am ____ Japanese.

8.         You have ____ banana, I have ___ egg.

9.         These are ______apples.

10.     Can you see _____ bird in the sky?

11.     I want ______ water, I feel thirsty.

12.     Tom is _____ good student, they are ____ good students too.

13.     This is ____ sunny day today.

14.     I don’t like ____ man.

15.     This is _____ umbrella, it’s ___ his umbrella.

16.     I’ll tell you _____ story

17.     I want to buy ___car. ___ that car is nice.