This document discusses different types of conditional sentences in English including factual conditionals in the present and future tense, unreal conditionals in the present and past tense, and wish statements in the present and past tense. It provides examples for each type of conditional: factual present (If I study, I get good grades), factual future (If I study, I will get good grades), unreal present (If I studied, I would get good grades), unreal past (If I had studied, I would have gotten good grades), wish present (I wish I studied here), and wish past (I wish I had studied here).