The word "imperative" is derived from the term "emperor". Emperors gave commands, and imperative sentences are commands. Imperative sentences consist of predicates that only contain verbs in infinitive form; verb phrases are not allowed. Imperative sentences are generally terminated with an exclamation mark instead of a period.

<Imperative Sentence> = <predicate> = <verb> <complement>

Emperor Napoleon using an Imperative Sentence

 CONTINUED: Conditional Sentences