冠词

冠词分为不定冠词和定冠词，不定冠词a / an , 定冠词the. 1. 不定冠词的用法 ﹙1﹚ 在叙述时用于第一次提到的某人或某物。如： This is a book. ﹙2﹚ 表示“一个”的概念。如:

Population is a big problem for cities. ﹙3﹚ 表示“每一”的概念。如: I go to the cinema once a month.

﹙4﹚ 指某人某物，但不具体指哪个人或哪个物。如： Lend me a storybook, will you? ﹙5﹚ 用于表示时间、速度、价格等意义的名词之前，有“每一”的意思，相当于every，如： five lessons a week two kilometers an hour ﹙6﹚ 用于可视为一体的两个名词前。如： a knife and fork 2. 定冠词的用法

﹙1﹚ 表示特指的或上文提到过的人或事物。如： I have a book. The book is very interesting. ﹙2﹚ 表示世界上独一无二的事物。如： The earth moves around the sun.

﹙3﹚ 用在序数词、形容词最高级前面。如： She is the most careful student in our class. ﹙4﹚ 用在姓氏的复数形式前表示一家人或夫妻俩。如： The Greens are watching TV now. ﹙5﹚ 用在单数可数名词前表示一类人或事物。如： The orange is orange.

﹙6﹚ 用于由普通名词构成的专有名词前。如： the Great Wall the Summer Palace ﹙7﹚ 与某些形容词连用表示一类人。如： The rich should help the poor. ﹙8﹚ 用在方位名词前。如： Jilin is in the north of China.

﹙9﹚play与乐器类名词连用时，名词前应加定冠词。如： I like playing the piano. 二、数字

1. 大数字的表达方式，我们要掌握其读法特点。注意每三个数为一个单位，按 照百、十、个向下读，

729读作seven hundred and twenty nine，

然后前面进位的读法分别为thousand, million, billion； 6，500，431，729 读作six billion, five hundred million, four hundred and thirty one thousand, seven hundred and twenty nine.

2. 年代读法一般是两位两位地读。如： 1993 读作nineteen, ninety three 2008

读作two thousand and eight 2.预习检测

专项练习：在下列各题的横线上填上a , an 或 the

1. Do you know Taiwan, Jenny? Yes, of course. Taiwan is___ island. It belongs to China.

2. There is ___ park in the center of the city. 3. Do you enjoy school life? Yes, of course. I’ve had____ wonderful time here. 4. ____ cat is an animal. 5. I can see a bird in ____ sky.

6. Changjiang River is____ longest river in China. 7. We stayed at a very nice hotel. But I can’t remember____ name of it. 8. Sue could play__piano at____ age of four. 9. ____ book on the desk is ___ useful one. 10. English is____ useful language in _____ world. 11. ____ new bridge has been built over___ Huangpu River. 12. This is ____ orange . ___ orange is on the table. 13. We work five days _____week.

14. After ___ dinner, he stayed at home and played___violin. 15. I’ve tried it three times .Let me try ___ fourth time. 16. He is ___ English teacher. 17. ____Whites are watching TV.