二、 冠词
英文中冠词仅有三个词，但又分为两类：其一是不定冠词(Indefinite Article)即a,an.其二是定冠词(Definite Article)
即 the.这三个字在英文中出现频率最高，其用法各异，在学习中要予以一定的注意，以便很快正确而熟练地应用它们。
它们的使用原则十分简单，不定冠词是泛指某人或某物，有时还可以表示"一个"的含意。而定冠词则用于特指某人或某物，特指某些人或某些物。但具体的应用也有一些要记住的要点和习惯用法。
表2－1冠词用法简表
| 不定冠词 | 指人或事物的某一类 | A teacher teaches students. |
| 相当于one，表示"一" | He will be back in a day or two. | |
| 相当于a certain 或 one like，指某人或某物，但不具体说明 | A boy is waiting for you outside. | |
| 相当于any，表示"种类" | A triangle has three angles. | |
| 相当于the same，表示"相同" | Birds of a feather flock together. | |
| 相当于every 或 per，表示"每" | The car is running 50 miles an hour. | |
| 用于形容词最高级前，无比较含义 | This is a most useful book. | |
| 用于序数词前，表示"再" | Please give me a second chance. | |
| 用于习语中 | all of a sudden, as a matter of fact |
| 定冠词 | 特指某些人或某些事物 | Beijing is the capital of China. | |
| 指谈话双方都知道的人或事物 | What do you think of the film? | ||
| 指上文提到的人或事物 | I saw a boy. The boy was crying. | ||
| 用于独特事物的名词前 | The moon goes around the earth. | ||
| 用于单数名词前表示一类人或事物 | The horse is a useful animal. | ||
| 用于序数词前 | The first lesson is easy. | ||
| 用于形容词前 | 最高级 | Who is the tallest student here? | |
| 表示某一类人或事物 | The young should respect the old. | ||
| 表示某种抽象概念 | The beautiful never dies. | ||
| 用于某些专有名词前 | 江河 | the Yangtze River, the Suez Canal | |
| 山脉 | the Alps, the Tianshan Mountains | ||
| 海洋 | the Pacific Ocean, the Yellow Sea | ||
| 湖泊 | the West Lake | ||
| 群岛 | the Hawaiian Islands | ||
| 报纸、杂志 | the Times, the People's Daily | ||
| 巨大建筑 | the Great Wall, the British Museum | ||
| 朝代、时代 | the Stone Age, the Ming Dynasty | ||
| 组织机构 | the United Nations | ||
| 用于含有普通名词的专有名称前 | the United States of America | ||
| 用于姓氏复数形式前，表示一家人 | The Turners are watching TV. | ||
| 用于逢十的复数数词前，表示年代 | in the 1990's | ||
| 用于某些习语 | to tell the truth, to go to the doctor | ||
| 不用冠词 | 某些专有名词前 | He was born in Beijing. | |
| 物质名词前 | Iron is a very useful metal. | ||
| 抽象名词前 | Wisdom is better than strength. | ||
| 季节、月份、星期等名称前 | Spring is coming. Sunday is the first day of a week. |
||
| 节日、假日等名称前 | Christmas Day, May Day但the Spring Festival 要有冠词 | ||
| 表示一类人或事物的复数名词前 | Horses are useful animals. | ||
| 称呼语或表示头衔的名词前 | Thanks a lot, doctor. | ||
| 在三餐饭前 | I have breakfast at home. | ||
| 在球类运动或棋类游戏名称前 | Can you play basketball of chess? | ||
| 某些固定词组中 | 名词词组 | day and night, heart and soul | |
| 介词词组 | on foot, at night, by bus | ||
| 名词前有 this, that, my, your, whose, some, any, no, each, every, either, neither 等代词 | We all like this
baby. Every member should follow the rules. Will you give me some ink? |
||
| 名词前有名词所有格 | He is driving his brother's car. | ||
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