Other contributors have said "Five example sentences with singular and pronoun?" is the same question as "What are pronoun sentences?" If you believe that these are not asking the same thing and should be answered differently, click here
Pronouns make a sentence easier to say and less tedious to the ear. For example:John took John's car to pick up John's mother and take John's Mother to an appointment.John took his car to pick up his...
The word "their" is a possessive pronoun, and is not spelled there.Example : "Their car broke down before they could get there."Their costumes matched mine.