This document provides information and examples about the use of modal verbs "should", "ought to", and "had better" in English. It explains that "should" and "ought to" are used to give advice or state what is correct, while "had better" specifically gives advice about a particular situation. Examples are given showing how to use each modal verb in affirmative and negative sentences, as well as questions. Practice dialogues are included for the reader to practice using these modal verbs in different contexts.