A Sentence is a form of words which contains a Statement, a Question, an Exclamation, or a Command.
A sentence in the form of a Statement is called a Declarative Sentence: as,—canis currit, the dog runs.
A sentence in the form of a Question is called an Interrogative Sentence: as,—canisne currit? does the dog run?
A sentence in the form of an Exclamation is called an Exclamatory Sentence: as,—quam celeriter currit canis! how fast the dog runs!
A sentence in the form of a Command, an Exhortation, or an Entreaty is called an Imperative Sentence: as,—ī, curre per Alpīs, go, run across the Alps; currat canis, let the dog run.