The document provides examples of using the verb "to be" in English in the affirmative, negative, and interrogative forms. It lists subjects and their corresponding states of being or descriptions, such as "I am a doctor", "You are not a good friend", and "Is she my mother?". The document is teaching how to conjugate and use the verb "to be" in basic sentences.

1. VERB TO BE
Profesora Daniela Lizama V

2. TO BE

4. AFFIRMATIVE FORM
 I am a doctor - I am happy
 You are a good friend - You are sick
 He is a dentist - He is alone in his house
 She is my mother - She is sad
 It is Monday - It is cold today
 We are students - We are in the school
 They are my brothers - They are reading a book

6. NEGATIVE FORM
 I am not a doctor - I am not happy
 He is not (isn’t) a dentist - He is not (isn’t) alone in his house
 She is not (isn’t) my mother - She is not (isn’t) sad
 It is not (isn’t) Monday - It is not (isn’t) cold today
 You are not (aren’t) a good friend - You are not (aren’t) sick
 We are not (aren’t) students - We are not (aren’t) in the school
 They are not (aren’t) my brothers - They are not (aren’t)
reading a book

8. INTERROGATIVE FORM
 Am I a doctor? - Am I happy?
 Are you a good friend? - Are you sick?
 Is he a dentist - Is he alone in his house?
 Is she my mother? - Is she sad?
 Is it Monday? - Is it cold today?
 Are we students? - Are we in the school?
 Are they my brothers? - Are they reading a book?

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