This document discusses gerunds and infinitives. A gerund is a verb form ending in "-ing" that functions as a noun. An infinitive is "to" plus a verb. Some key points: - Gerunds can be subjects, objects, or complements of sentences. Infinitives are most commonly subjects or objects. - Certain verbs like "enjoy", "quit", and "suggest" can be followed by gerunds or infinitives with different meanings. - Prepositions can take gerund objects like "talked about painting". - Verbs like "remember", "forget", "stop" have different meanings depending on if they are followed by a ger