This document discusses different tenses that can be used to express future time including the future simple, present simple, present continuous, be going to, future continuous, and future perfect. It provides examples of how the present tense can refer to future time in clauses introduced by time expressions like when, if, until, and as soon as. It also explains how the present continuous is used to talk about pre-planned events in the near future or definite plans and arrangements, often including details about time, date, or place. The present simple is used to describe future events that cannot be controlled, like events in a timetable or laws.