Declarative Sentence-Makes a statement or expresses an opinion Example-I want to be a good writer.
Imperative Sentence- Gives a demand or makes a request usually ends in a period, but sometimes an exclamation point. Example- Please sit down. I need to sit down now!
Interrogative Sentence-Ask a question, Begin with Who, What, When, Where, and How Example-When are you going to sleep? How old are you?
Exclamatory Sentence-this sentence expresses great emotion, excitement, surprise, happiness, and anger Example: It is too dangerous to climb that tree!