* Person: They indicate who is speaking (first person - I, we), who is being spoken to (second person - you), or who is being spoken about (third person - he, she, it, they).
* Number: They distinguish between singular (I, you, he) and plural (we, you, they) forms.
* Gender: In some cases, they reflect the gender of the person or thing being referred to (he, she, it). Note that the use of gendered pronouns is evolving, and gender-neutral options like "they" are becoming increasingly common.
* Case: They change form depending on their grammatical function in a sentence. The three main cases are:
* Nominative: Used for the subject of a verb (e.g., I went to the store).
* Objective: Used for the object of a verb or preposition (e.g., The dog chased me; I sat beside her).
* Possessive: Indicates possession (e.g., That's my book; This is their house).
So, in summary, personal pronouns have person, number, gender (in some cases), and case.