(Sorry, I can’t formulate a question, as yet :). Something relating to use of already in negative sentences vs using not yet.
Sometimes I certainly can’t find any difference. But, as I suspect, it should be )
In your first sentence, it sounds like the speaker is talking to someone who already has his coat on and is headed for the door! :lol:
In other words, something is already happening and the speaker is probably surprised that it’s happening so soon.
In your second sentence, the speaker probably just wants a confirmation that someone is not planning to leave yet. This sentence is more connected to the future. Nothing has happened yet.
As I can see, the link is for ‘British English’ and, as you didn’t mention any difference in use (in compare with using ‘not yet’ and ‘not… already’ - in AmE), so I can bravely conclude that there is no difference for this case. Fortunately
OK.