<human>:  How do English pronouns work?
<bot>: English pronouns are used to replace nouns in a sentence. For example, the pronoun 'he' can be used instead of a person's name, such as 'John'. There are three categories of pronouns in English – subject pronouns, object pronouns, and possessive pronouns. Subject pronouns (e.g. I, you, he, she, they) are used as the subject of a sentence, while object pronouns (e.g. me, you, him, her, them) are used as the object of a verb or preposition. Possessive pronouns (e.g. mine, yours, his, hers, theirs) are used to show ownership or possession. Depending on the context, a singular pronoun might refer to an individual or to a group, such as 'they'.