appreciate与thank
两者均可表示“感激”，但有区别：即 appreciate 的宾语是事或事物，而 thank 的宾语必须是人。如：
我们对他道谢后就离开了。
误：We appreciated him and left.
正：We thanked him and left.
我们感谢你的好意。
误：We thank your kindness.
正：We appreciate your kindness. (比较：Thank you for your kindness.)
