of raindrop 亦然
例外：a. a part of= part of
part 永远对
b. 表示职务、身份、亲属关系的词可以单独使用
Little Bush, son of George Bush, is running
for the office of president.
c. 表示“种类”名词后所接noun可单独使用
type of , kind of, sort of
d. 表示某一方面的名词可单独使用
All cells differ in function, in size, in color, in shape.
(B)定冠词 (the ,表特指)
the astronomy, the nitrogen, the iron, in the histroy,
in the nature, of the human hoby, on the right side
这些名词前都不能加the
1. 表示“独一无二”的事物
the Great Wall, the Sun, the Moon, the Earth
2. 关于序数词
* 序数词只有作定语修饰noun,才必须加the
年代：in the serventeenth century
排序：the eight(h) element (is)......
* 序数词考两点：a. 加不加the
b. 是eight或eithth (单词)
陷阱： a. Utah ranks first among...
b. A is second only to B.
3. adj.最高级作前置定语修饰noun,才必须加the.
the most desolate region(S)
the most ... area(s)
adj+est 后可以是复数。
4. 四大洋，河流，湖泊前必须加the
Winds from the Atlantic Ocean
5. “人体” the human body
“普通人” the average person
the common person
