Still/yet

Hi,
he hasn't found his wallet yet. It seems important that he finds it.
i personally feel that using still in the place of yet in the above sentence looks a bit odd.

Bono sings "But I still haven't found what I'm looking for."

The way that sentence is structured, Maj, I believe both yet and still are superfluous. He hasn't found his wallet. What more is there to say.

'Is Tom still emptying the garbage bins?'

'Yes, he still hasn't found his wallet.'

That I can accept.

they are both used to emphasising the time element, and we put still b4 the verb and yet after - just convention.

although ther might be a slight variation in meaning :
"yet" implies that the event which hasn't happend is LIKELY to happen, as in, "he hasn't passed the test, yet" ... suggests he can / will pass it,

where as: "he still hasnt passed the test" sounds more

hi suzi

I would like to add to your explanation.

"yet" is usually used with negative expressions while "still" is used in possitive statement.

Am i correct?