This document discusses conditional sentences. It defines conditional sentences as statements that discuss known factors or hypothetical situations and their consequences. It then explains the four types of conditional sentences:
Zero conditional sentences discuss things that are always true, like scientific facts. First conditional sentences express possibilities in the future or real situations. Second conditional sentences express dreams or unlikely situations. Third conditional sentences express past or impossible situations that cannot be changed.
The document provides examples for each type and then presents practice questions for readers to identify the correct conditional sentence structure. It concludes by assigning individual homework to find a YouTube video containing conditional sentences.