This document discusses different ways to express the future in English:
1. The present continuous ("I'm playing tennis tomorrow") is used to talk about future plans and arrangements.
2. The present simple ("The bus leaves at 1:30") is used to talk about timetables for public transport, movies, etc.
3. "Going to" expresses future decisions ("I'm going to have an early night") and predictions based on present evidence ("It's going to rain").
4. "Will" expresses sudden decisions, promises, offers, requests, predictions, and planned schedules ("Classes will begin on the first of the month").
5. The future perfect ("will have +