about后面加什么主语

　　Talking about my problems doesn't come easy to me.

　　要讲关于自己的问题，对我来说并不容易。

　　It's only human nature to be worried about change.

　　对变革有忧虑不过是人之常情。

　　We estimated it would cost about 5 000.

　　我们估计要花费大约5000欧元。

　　People just don't stop to think about the consequences.

　　人们做事情就是不肯停下来想想后果。

　　My parents had fixed ideas about what I should become.

　　父母对我应该成为什么样的人有定见。