(2) He shouldn't be in here.
The first- and second-person pronouns are used primarily deictically.
The similarity of the deictic use of Present tense and the deictic use
of the pronoun I is well-known and has been captured in various
systems, e.g., by including both among the indices in a "point of
reference" for possible-worlds semantics or by defining them as "time
of utterance" and "utterer," respectively. It seems that I has only a
deictic use; that is certainly not true of the Present morpheme, as
will be illustrated presently.