The document discusses various English modal verbs. It defines modal verbs as a type of helping or auxiliary verb. It lists 13 different modal verbs - will, shall, can, may, should, must, ought to, used to, could, would, might, dare, need. For each modal verb, it provides examples of usage and contextual meaning. It explains that modal verbs are used after the first form of a main verb and do not have second or third forms or the '-ing' form. The document aims to explain the proper usage of various English modal verbs.