This document provides instructions for forming yes/no and wh- questions in English. It discusses three main cases: 1) Questions using auxiliary verbs like "be", where the subject and verb are inverted (e.g. "Are you happy?"). 2) Questions using modal verbs like "can", where the subject and modal verb are inverted (e.g. "Can I help you?"). 3) Questions using auxiliary "do/does", where it is added to simple present tense verbs and the subject and auxiliary are inverted (e.g. "Does he smoke?").