With interjections, writers speak to the reader
and themselves. Like exclamations, interjections are often followed by
exclamation points. Unlike exclamations, they do not stand alone but are
part of a sentence, though not grammatically tied to it.
Ah, yes, mere adultery (mundane, commonplace
and in divorce, mostly a legal irrelevancy) has ended yet another
military career.
Added to the regret of Ah is the resignation
of yes.
It goes: gosh, isn't Motorola amazing, all
those cell phones it sells, all that total quality, all that training—gee,
whadda company!
Ah, this getting older, however fortunate one's
circumstances, is a scary business.
He is—and how old-fashioned the words sound!—something
more than that, something resolutely indefinable, unpredictable.