1. 用于一个再次出现或前面提到过的名词前面。
There is some difference in our views, but the difference can be easily settled.
2. 用于由限定性定语或限制性定语从句修饰的名词前面。
This is the book that I promised to lend you.
注：用在限定的名词前的 the 也表整体或全部，试比较：
They are the teachers of our school. [指教师全部到场]
They are teachers of our school. [无the，指尚有一部分未到场]
所以，“He is the student of Class A” 表述错误，应改为He is a student of Class A.
[a student of Class A = one of the students of Class A]
3. 用于最高级形容词的前面。
The Mississippi is one of the largest rivers in the world.
David is the most diligent student of our class.
[the most 是最高级表现形式，意为 David is more hardworking as compared with other boys in our class. ]
4. 用于某些独一无二的物体名称前。
the sun / the moon / the world / the universe / the Bible
5. 用于河流、海洋、山脉、沙漠、船只、半岛、群岛的名词，及民族、政治机构、社会阶级、杂志、俱乐部和重要的政治或社会事件的名称之前。
the Changjiang River 长江 the Yellow Sea 黄河
the Pacific Ocean 太平洋 the Pentagon 五角大楼
the House of Representatives 美国众议院
6. 用于序数名词前。
She was the first to join the singing group.
February is the second month of the year.
7. 用于四个基本方位名称前（即东南西北）。
The sun rises in the east and sets in the west.
8. 用于泛指的乐器名词前。
Mrs Smith plays the piano.
Mary is learning to play the violin.
>>点击查看开心语法大讲堂专题，了解更多相关练习和解析。
>>点击查看开心语法大讲堂专题，阅读更多相关文章！
-
开心语法大讲堂：抽象名词+itself
"抽象名词+itself"可用在be的后面作为表语形容词。这是一个强势结构，能产生强烈的修辞效果。
- 开心语法大讲堂：名词用作前置形容词
- 开心语法大讲堂：集体名词的数的问题
- 开心语法大讲堂：名词用作前置形容词的数的问题
- 开心语法大讲堂：“of+抽象名词”结构