What is a pronoun?
A pronoun takes the place of a noun and sometimes refers to a noun in the sentence.
Example #1

He is riding a bike through the park.
Reasoning: The word "he" is a pronoun because it takes the place of a person.

Example #2

The weather is great today; let's make the most of it by going to the beach.
Reasoning: The word "it" is a pronoun because it refers to the weather.

There are 8 types of pronouns. They are listed below with some examples.
  1. Personal (subjective: I, you, he, she, it, we you, they | objective: me, you, him, her, it us)
    Explanation: Used to take the place of nouns.
  2. Demonstrative (this, that, these, those)
    Explanation: Used to refer to things nearby.
  3. Reflexive (myself, yourself, himself, herself, itself, ourselves, themselves)
    Explanation: Used only when a subject performs an action to, for, or upon itself.
    Example #1: We found ourselves puzzled over all these pronouns.
    Example #2: You need to do these grammar exercises yourself.
  4. Intensive (Same as reflexive but used only for emphasis.)
    Explanation: Used immediately after a personal pronoun for emphasis only.
    Example #1: I myself believe that good grammar is essential.
    Example #2: You yourself may not believe this.
  5. Interrogative (what, which, who, whom, whose)
    Explanation: Used only in reference to a question.
    Example #1: Who is working in the writing lab?
    Example #2: What kinds of pronouns are used most often?
  6. Relative (what, which, whichever, who, whom, whose, whoever, whomever)
    Explanation: Used only in reference to nouns or other pronouns but never in a question.
    Example #1: This is what you wanted!
    Example #2: I don't know which to choose.
  7. Indefinite (singular: anybody, anyone, anything, each, either, everybody, everyone, everything, neither, nobody, no one, nothing, one, somebody, someone, something | plural: both, few, many, several | singular or plural: all, any, most, none, some)
    Explanation: Used in reference to a person when we don't know who the person is, or when the person can refer to people in general.
    Example #1: Everybody has to pay taxes.
    Example #2: Most hate it!
  8. Possesive (singular: my, your, his, her, its, mine, yours | plural: our, your, their, ours, yours, theirs)
    Explanation: Used to show ownership.
    Example #1: Here is our house.
    Example #2: Purple is my favorite color.

Exercise 1 | Exercise 2