The document defines and describes the different types of sentences:
1) A sentence is a group of words that makes complete sense, contains a main verb, and begins with a capital letter. There are five types of sentences: declarative, interrogative, imperative, exclamatory, and optative.
2) Declarative sentences make a statement that can be affirmative or negative. Interrogative sentences ask a question using word order or interrogative words. Imperative sentences give commands or requests.
3) Exclamatory sentences express strong emotions using an exclamation point. Optative sentences express wishes or prayers.