Sentences according to purpose :
1.
declarative: declares or narrates a sentence, as in, "The dog is walking by the road."
2.
imperative: gives a command, as in, "Wash the dishes after you eat."
3.
interrogative: asks a question, as in, "Are you going out tonight?"
4.
exclamatory: a sudden feeling or emotion, as in, "Watch out!"
Sentences according to structure :
- simple sentence
- compound sentence
- complex sentence
- compound complex sentence