区别：
for的意思是“为了”，为了一般与decorate，help，thank等及物动词相连接；
of的意思是“的”，后面一般跟名词，它还连接量词和不可数名词。
相关介绍
He had to go to the hospital for treatment.
他不得不去医院接受治疗。
Tourism is a major source of income for the area.
旅游业是这个地区的主要收入来源。
There aren't enough books for everyone to have one each.
书不够给每人发一本。
In school, he was not one of the achievers.
上学时他不属于拔尖的那类。
This is one of the most commonly used methods.
这是最常采用的方法之一。
The two groups of children have quite different characteristics.
这两组儿童具有截然不同的特点。
