about me:I don't want him to worry about me.我不想让他担心.I don't want him to worry about me.为什么要“about me”?省略变为：I don't want him to worry.

about me:I don't want him to worry about me.
我不想让他担心.
I don't want him to worry about me.
为什么要“about me”?省略变为：I don't want him to worry.

原句强调担心的对象,而省略句突出的则是“worry”这一情绪.