This document discusses 5 ways to use infinitives in sentences. Infinitives are verbs with "to" added, such as "to run" or "to talk". Infinitives can be used as subjects, objects, subject complements, adjectives, and adverbs. As subjects, infinitives drive the sentence. As objects, they follow verbs and subjects. As subject complements, they follow linking verbs and subjects. As adjectives, they modify nouns. And as adverbs, they modify verbs.