about后面加什么主語

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

　　要講關于自己的問題，對我來說并不容易。

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

　　對變革有憂慮不過是人之常情。

　　We estimated it would cost about  5 000.

　　我們估計要花費大約5000歐元。

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

　　人們做事情就是不肯停下來想想后果。

　　My parents had fixed ideas about what I should become.

　　父母對我應該成為什么樣的人有定見。