The document provides instruction and exercises on using the verb "to be" in English, including:
1) Positive sentences with full and contracted forms of the verb (e.g. "I am a student", "He is a teacher").
2) Exercises choosing the correct form of the verb between "is", "am", "are".
3) Negative forms and contractions of the verb (e.g. "I'm not a singer", "They aren't pilots").
4) Exercises forming negative sentences.
5) Questions with the verb using "am", "is", "are" (e.g. "Is it expensive?", "Are you happy?