冠词

冠词分为不定冠词，冠词和零冠词。

不定冠词有a和an，后接可数名词单数。如果可数名词的发音以元音开头用不定冠词an，如果可数名词的发音以辅音开头用不定冠词a。用法如下：

（1）每一；表示频率，速度和价格。

I go to the cinema once a week.

I am walking at two miles an hour.

It cost me five dollars a kilo.

（2）又一；后接序数词，表示数量或序数的增加。

He bought a second computer.

Would you like a second cup of coffee?

（3）泛指一类人或物中的一个。

He has an apple in his hand.

（4）用任何一个表示所属种类的特征。

A horse is useful to mankind.

（7）固定搭配

have a meeting  have a walk  have a party

a piece of  a lot of  a glass of

定冠词为the，有this，that，these，those的意义。用法如下：

（1）特指某（些）人或某（些）物，以区别与同类中其他的人或事物。

Is this the book you are looking for?

（2）双方都知道的人或事物。

Open the door, please.

（3）用来指上文中已提到的人或事物。

I saw a film yesterday. The film ended at eight o’clock.

（4）表示世界上独一无二的事物或自然现象，或用于方向、方位名词之前。

the sun/the moon/the earth/the sky/the east/the left

（5）与名词单数连用，表示一类人或物。

The dog is not too dangerous.

（6）与形容词连用，表示一类人或物。

the rich      the poor    the new    the right

（7）与序数词或形容词最高级连用。

This is the most interesting book I have read.

（8）用在乐器，文艺活动和运动场所的名词前。

She plays the piano very well.

They are going to the cinema tonight.

（9）用在姓氏复数之前，表示某对夫妇或全家人。

The Greens are kind to us.

（10）用在群岛，山脉，江河，湖海的名称前。

The Yangtze River is the longest river in China.

（11）用在一些习惯用语中。

in the day  in the morning  in the end

in the distance  by the way at the weekend

零冠词

（1）月份星期有两节。

Chinese English math history physics

（2）学科球类吃三餐。

He plays basketball every day.

He prefers milk for breakfast.

I like Chinese.

（3）专有名词不可数。（物质名词和抽象名词）

Do you know Nanjing Road in Shanghai?

Blood is thicker than water.

Failure is the mother of success.

（4）复数名词表泛指。

Teachers should be respected.

（5）代词限定名词前。

this eraser  her book  some boxes

（6）称呼头衔和职务。

What are you doing，boy?

He is head of the factory.

（7）固定词组不加冠。

in fact  go to school  at home  by bus 

on foot  at night    in bed  by phone