The document discusses three types of verbals in English: gerunds, participles, and infinitives. Gerunds are verb forms ending in "-ing" that function as nouns. Participles are verb forms ending in "-ed" or "-ing" that function as adjectives or adverbs. Infinitives consist of "to" followed by a verb base and can function as nouns, adjectives, or adverbs. The document provides examples and exercises to illustrate how to identify these verbals in sentences.