This document discusses the simple present tense in English. The simple present tense is used to describe habitual or repeated actions that occur on a regular basis, such as "we study English twice a week." It provides examples of affirmative sentences using the simple present tense and discusses its use with third person singular subjects. Negative sentences are formed by placing "do/does not" before the main verb. Questions are formed by swapping the subject and auxiliary verb "do/does" and adding a question mark, such as "Do you enjoy your English lesson?"