1. Declarative sentence
Used to state opinion or facts or give information.
example - Gym is a place not for the weak.
2. Interrogative sentence
Used to ask questions.
example - Is following daily routine a way to success?
3. Imperative sentence
Used to give orders or directive
example - Complete your tasks now.
4. Exclamatory sentence
Takes declarative one step further ie used to state sentence with emotions.
example - CONGRATULATIONS! You have been selected to represent the company in the coming development forums.