Changing statements to questions

The document provides instructions for changing statements into questions by beginning them with "do", "does", or "did". It explains that questions with present tense verbs use "do" or "does" followed by the subject and base verb form, using "do" for plural subjects and "does" for singular subjects. Questions with past tense verbs use "did" followed by the subject and base verb form for both singular and plural subjects. For questions with forms of "to be", the subject and predicate are reversed. Examples are given to demonstrate transforming statements into questions.