What's the difference here?

01 and 4 are the expected forms, with 1 sounding slightly more formal. 2 is unnatural. 3 is heard occasionally, and would likely refer to the speaker's permanent condition in life, rather than his/her current condition. 0-

0 Mr. M. You meant "1 and 4" at the beginning, right? CJ 0-

0Yes, of course-- thanks, Jim. Feel free to edit me when you see my mind wandering. I'll go and fix it now. 0-

Sorry, but I couldn't understand what CJ wanted to say with: ""1 and 4" at the beginning", so I cannot understand what is necessary to edit in Mr. M answer. Could you explain?
I've got that 1=4, 3 should not be used, and 3 refer to the speaker's permanent condition in life, as Mr. M said. Is it correct? And thank you Mr. M and CalifJim!
Anyway I cannot understand why I cannot say "I hav

Sorry to confuse you, Eladio. CJ told me about my mistake, so I edited my post, and now there is no mistake in it. Therefore, what is written there is now correct-- or at least, what I intended to write.


Yes, interestingly, we use the contracted form ('I haven't any money'), but not the full form ('I have not any money). I don't know why, Eladio-- maybe another member does.

The confusion about permanent conditions is specific to money -- "to have money" (or "not to have money") is an idiom referring to one's general wealth, not the actual cash in one's pocket at the moment. If I "have some money" I can buy a sandwich. If I "have money" I can buy the restaurant.

"I have no girlfriend," "I don't have a girlfriend" and "I don't have any girlfriends" are all

Ok, thank you.
Ok, I cannot say "I have not a girlfriend", but can I write that? I think so. Correct?
Eladio

"I have not a girlfriend" may be grammatically correct but not the usual usage. Better to say "I do not [or don't] have a girlfriend."

I can more easily imagine hearing "I haven't a girlfriend" than "I have not a girlfriend"

If we put all this in the past, are all these equivalent?
- I had no girlfriend
- I didn't have a girlfriend
- I hadn't a girlfriend
at that time

?

Yes, all are correct, although "I hadn't a girlfriend" would probably only be heard in BrE, and "I didn't have a girlfriend" is probably more common than "I had no girlfriend," at least in AmE.