This document provides a preview and overview of the key concepts covered in Chapter 3, which discusses different ways to express future time in English, including using "be going to", "will", the present progressive, and the simple present tense. It previews and gives examples of expressing certainty, distinguishing between "be going to" and "will", using time clauses and parallel verbs. The chapter contrasts the meanings and uses of different constructions for talking about the future in English.