What's Eating You? 也可以说成 what's bugging you？意思其实是What is annoying or bothering you?
比方说，你现在看起来心情非常不好，你的朋友出于关心可能会问你what's bugging/eating you?
When something is eating at you, it is consuming your thoughts, time, and energy. It makes you depressed and you suffer from it. This phrase is asking someone who looks depressed why they are not happy.
A. You seem really upset. What's eating you?
B. I got dumped, and I feel terrible.
A. Sorry to hear that.
What's It Worth (To You)?
said when you want to know what someone will give you if you give them the piece of information they have asked for
A: Do you know where Dave's living now?
B: What's it worth?
What's Not To Like?
used to say that you think something is very good, and that nobody could disagree with your opinion
It's a big house with a swimming pool. What's not to like?
What's That (All) About (Then)?
used when you do not understand why something or someone is so popular or fashionable
Pierced tongues - what's that about, then?