This document discusses various wishes and regrets about the past as well as hypothetical scenarios using conditionals. It provides examples of expressing regrets using "wish" with the past or past participle. Additionally, it examines how things may have been different through conditional sentences with "if" and the past participle followed by "would have". The document ends with questions about life changes, characteristics changed in the past year, pick-up lines, starting conversations with strangers, and rejecting invitations.