Here belong I,HE,SHE, It, We, You, They
. They have a single purely
grammatical category-that of case. The cases are nominative and objective.
Personal pronouns are used as noun-pronouns.
In predicative function the objective case forms are preferable. For
example: ”But I’m not him”.
Nominative case forms are normally used in complex sentences in which
these forms are followed by attributive clause. For example: “For once
it was she who lowered her eyes.” But the objective case forms are
possible here too. For example: “This time it was her
who lowered the
eyes.”
Note
Two more tendencies are observed in present-day English:
The use of the objective case form in the function of subject,
especially colloquially. For example: ”Me and the old man haven’t
talked like this for a long time"
The use of the nominative case forms in the function of a homogeneous
object. For example: He gave it to my brother and I"