Of;(1)表示所属关系：。。。的；属于。。的；关于。。的
例句；i don't remember the name of the street.
(2)表示具有某种性质、内容。状况等
would you like another cup of tea？
（3）表示数量或种类
We need two more tons of coal
（4）表示同位关系
he came here in the month of Mary
（5）表示动宾关系
it is a waste of time to talk with her
From：
1.表来源、起点：自、从；
WE should learn from Lei Feng
2.表原因、动机：由于；出于
He did so from a sense of duty
3表距离、间隔：离开
Far from eye ,far from heart
4.表原材料：用。。。制成
Steel is made from iron
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