The document discusses the simple present tense in English. There are four main present tense forms: the simple present, present continuous, present perfect, and present perfect continuous. The simple present is used to talk about habitual or repeated actions, permanent states, and schedules in the future. It discusses the forms of positive and negative sentences and questions in the simple present tense, including using "do/does" for questions and negatives. The verb "to be" has the forms "am, is, are" in the simple present tense.