The vocative case is one of the 4
main cases in modern English. The vocative case is used to indicate direct address (i.e.,
talking to somebody directly). Names in the vocative case are offset using commas.
you been, Charlie? Jonathan,
do not forget your shower gel.
And that, your
Honour, concludes our case.
me a favour, Kev, and
ask Tim to stop bleating about the wind.
[show me the vocative case]
Nouns and pronouns in the vocative
case are identical to those in subjective case. However,
they should be offset using comma(s). This is why the vocative case is
distinguished as a case.