This document discusses different ways to express unreality and conditionals in English, including real conditionals, unreal conditionals, present and past unreal conditionals, wishes, and "if only" statements. It provides examples and explanations of how to use conditional sentences and expressions like "wish" and "if only" to talk about unlikely, impossible, or regretted situations in the present, future, and past. Practice exercises are included to help readers apply these conditional and expression structures.