是形容词，没有复数形式，例如：
1、In the final analysis， it's a matter of personal choice.归根结底，这是个人的选择。
2、My personal problems are not really important in the overall scheme of things.从全局来看，我个人的问题并非十分重要。
3、Having good personal relationships is the most important thing for me.拥有良好的人际关系对我最为重要。
