The document discusses the uses of the verbs "to be" and "to have" in English. It examines them as main verbs, auxiliary verbs, and in different tenses and constructions. For "to have", it outlines its uses for possession, actions, obligations, experiences, and arrangements. For "to be", it describes how it acts as a linking verb and is used in progressive and passive forms, questions, negatives, and with time expressions. The document provides examples to illustrate the different uses of these fundamental English verbs.