This document discusses the second conditional in English grammar. It explains that the second conditional refers to unlikely or imaginary present situations. The form uses "if" followed by the past simple in the if-clause and "would + base verb" in the main clause. Examples are provided to illustrate how the second conditional is used to talk about unlikely future situations, give advice by saying "if I were you," and note alternatives to "if" like "if only," "unless," and "were to."