The document discusses different ways to express future tense in English using will, going to, the simple present, present progressive, future progressive, and future perfect. It provides examples of how to form and use will and going to for making predictions, plans, decisions, and promises. It also explains how the simple present and present progressive can indicate future time when used with schedules. The future progressive and future perfect are used to refer to actions that will be ongoing or completed at some point in the future.