From: "John Cowan" <[log in to unmask]>
> > I was merely disagreeing that it was seen as actually being the same as
> > "of", I think the spelling is used because "of" is the only word in
> > English pronounced /@(v)/.
> But there are people who, when asked to repeat what they have said
> more clearly, will say /ai SUd @v gOn/ and not /ai SUd h&v gOn/,
> which says that they have reanalyzed /Sudv/ as containing "of".

People like me. :p  When 'have' is a second auxiliary (should have, could
have, will have) then it's pronounced [@(v)].  This is to differentiate from
'have' as the verb meaning to possess:

        I should have gone.

        I should have pizza.
        [SUd h&v]

Which may not mean much in itself because in a full sentence like that you
can tell by what follows.