The document provides information on verb tenses and structures in English, including:
1) The present simple and present continuous are used to describe present actions, habits, or states. The present simple is used for permanent situations while the present continuous is used for ongoing actions or temporary situations.
2) Modal verbs like can, may, must express ideas like ability, permission, obligation and are followed by the bare infinitive. Future tenses include the future simple for decisions and predictions, be going to for plans and intentions, and future continuous for actions in progress at a future time.
3) Past tenses include the past simple for completed actions, past continuous for ongoing parallel actions, past perfect for actions