This document provides information on English grammar topics such as the use of will vs be going to, modals, regular past tense verb forms, and used to. It includes examples and explanations of these grammar structures. Key points covered include how will expresses future events based on present decisions or predictions, while be going to expresses intentions or predictions based on present evidence. Modal verbs like can, may, should are also defined. Rules for forming the regular past tense with 'ed' are outlined, noting the different pronunciations of 'ed' as /ɪd/, /t/ or /d/. The document concludes with examples of how used to is used to talk about past habits or actions.