This document discusses the first conditional with conjunctions like "if", "unless", "provided that", and "as long as". It states that "unless" has a similar meaning to "if not" and that the main verb in the if-clause of a first conditional sentence is in the present tense. It provides examples of first conditional sentences for students to complete and feedback on those examples using the different conjunctions. It also includes a self-assessment for students to rate their understanding and assigns homework practicing first conditional sentences.