Personally speaking, I've always preferred Italian food.

就我个人来讲，我总是偏爱意大利菜。

Personally speaking, he is fit for the work.

我个人认为他胜任这项工作。

I think, personally speaking, it's a good idea.

一般说来，我认为你是对的。

Personally speaking, my hometown has changed a lot.

就我个人而言，我的家乡已经发生了巨大的变化。

Personally speaking, he doesn't deserve your friendship.

就我个人而言，他是不值得拥有你的友谊的。