Re: using "an"

"Daniel.C" <dcolardelleZZZZ@[EMAIL PROTECTED]
> wrote in message 
news:48198adb$0$2008$426a74cc@[EMAIL PROTECTED]
> Hi.
> I learned to use "an" before a noun beginning by a vowel. I think this
is 
> correct :
> an user
> but I read so many "a user" that I don't know what to think.
> Can you help me ?
> Thanks in advance.
> Daniel

There are exceptions to every rule and this is one of them. In this case
"a 
user" is correct.