to 表示一个对象。例如：thanks for your coming.谢谢你的到来.

of 最简单了，表示一种从属关系。例如：the leg of the chair.那凳子的腿.

相关介绍

They decided to base the new company in York.

他们决定将新成立的公司总部设在约克郡。

A number of measures were taken to alleviate the problem.

采取了一系列措施缓解这个问题。

The need to communicate is a key characteristic of human society.

需要交流是人类社会最重要的一个特征。

The new test should aid in the early detection of the disease.

新的化验应该有助于早早检查出这种疾病。