The document discusses the use of the second conditional to talk about hypothetical or unlikely situations. It notes that the second conditional uses "if" with the subject in the past simple tense followed by "would" and the base form of the verb. Examples are provided such as "If I were King Kong, I would jump from rooftop to rooftop." Exercises are included asking the reader to provide advice using the second conditional structure and answering questions with responses using "what would you do if..."