The document discusses various types of verb patterns in English. It explains that verbs can be classified as finite or non-finite. Finite verbs show tense and voice, and depend on factors like the subject and helping verbs. Non-finite verbs do not show tense and can function as nouns, verbs, adjectives or prepositions. Specifically, it covers infinitives, gerunds, participles, and the differences between finite and non-finite verbs.