The future cannot be used without using the personal pronoun.

Personal pronouns of the third person cannot be used with numbers.

Never, I once read, begin a letter with the personal pronoun.

Most of them are clearly related to the full personal pronouns.

Personal pronouns of the first and second person are placed before numbers.

For a full table and further details, see English personal pronouns.

I was obviously having trouble with personal pronouns this morning.

And you can easily use "she" as the personal pronoun.

Personal pronouns refer to a person: I go to school.

The personal pronouns in English take various forms according to number, person, case and natural gender.