Declarative – Makes a statement.
I am happy.
Interrogative – Asks a question.
Are you ready?
Imperative – Gives a command/request.
Sit down.
Exclamatory – Shows strong feeling.
Wow! That’s great!
By Structure:
Simple – One independent clause.
She reads a book.
Compound – Two independent clauses.
She reads, and he writes.
Complex – One independent + one dependent clause.
She reads because she likes stories.
Compound-Complex – Two independent + at least one dependent clause. → She reads because she likes stories, and he writes.