A2 still; until the present time还，尚；迄今
B2 the best, worst, etc. until now迄今最好的／最差的（等等）
C1 until and including this time直到现在
Wait for it! I haven't said 'go' yet.
We haven't discussed the matter in detail yet.
Has he found himself a place to live yet?
The details of the contract have not yet been settled.
His new novel is advertised as his steamiest yet.
C1 from now and for a particular period of time in the future从现在起至将来某个时间，还
C2 If you have yet to do something, you have not done it.还没有，尚未
The issue of funding has yet to be addressed.
The new daytime soap opera has yet to show signs that it's clicking with the television audience.
Don't panic, there's bags of time yet.
He won't be home for ages yet ... Oh, I spoke too soon - here he is now!
The full details have yet to be confirmed.
C2 even at this stage or time仍然，还
We might yet be able to book a holiday.
I may yet get rich.
It could yet turn out to be an important discovery.
It may yet turn out to have been the correct decision.
He could yet choose to abandon the project.
B2 used to add emphasis to words such as another and again, especially to show an increase in amount or the number of times something happens再，还（用于强调 another 或 again 之类的词，尤指数量增加或某事发生频繁）
B1 (and) despite that; used to add something that seems surprising because of what you have just said然而，尽管
You say that you're good friends and yet you don't trust him. Isn't that a bit of a contradiction?
The government is being accused of (having) double standards in the way it is so tough on law and order yet allows its own MPs to escape prosecution for fraud.
He claims that he is completely committed to the project and yet this is manifestly untrue.
He's had the benefit of an expensive education and yet he continues to work as a waiter.
You see, to my untutored eye that just looks like a load of random brush strokes and yet it's a very valuable painting.