1. POSITIVE FORM (+) NEGATIVE FORM (-) QUESTIONS (?)
VERB TO BE (SER O ESTAR)
POSITIVE FORM (+)
NEGATIVE FORM (-)
QUESTIONS (?)

2. VERB BE (+) FULL FORM I (subject pronoun) AM (verb) YOU ARE HE IS
SHE IS
IT IS
WE ARE
THEY ARE

3. VERB BE (+) CONTRACTED/SHORT FORM
I´M
YOU’RE
HE’S
SHE’S
IT’S
WE’RE
THEY’RE

4. VERB BE (+)
You ALWAYS have to use a SUBJECT PRONOUN with a verb: HE is Peter NOT is Peter
I is always written in capital letters: I am your English teacher NOT i am your English teacher.
Use HE for a man, SHE for a woman, IT for a thing or animal in the singular: He is my father. She is my friend Mary. It is a big dog.
YOU is used for the singular (tú, usted) and for the plural (vosotros, ustedes)
Use THEY for people, animals and things in the plural: They are my friends Mary and Peter. They are books.

5. VERB BE (-) FULL FORM
Put NOT after the verb BE to make negative sentences:
I AM NOT
YOU ARE NOT
HE IS NOT
SHE IS NOT
IT IS NOT
WE ARE NOT
THEY ARE NOT

6. VERB BE (-) CONTRACTED/SHORT FORM
You can contract are not (aren’t), is not (isn’t).
I’m not is different, you can only contract the subject pronoun (I) with the positive form of BE .
I’M NOT
YOU AREN’T
HE ISN’T
SHE ISN’T
IT ISN’T
WE AREN’T
THEY AREN’T

7. VERB BE - QUESTION FORM (?)
AM I?
ARE YOU?
IS HE?
IS SHE?
IS IT?
ARE WE?
ARE THEY?

8. POSITIVE(+) SHORT ANSWER
YES, I AM
YES, YOU ARE
YES, HE IS
YES, SHE IS
YES, IT IS
YES, WE ARE
YES, THEY ARE

9. NEGATIVE (-) SHORT ANSWER
NO, I’M NOT
NO, YOU AREN’T
NO, HE ISN’T
NO, SHE ISN’T
NO, IT ISN’T
NO, WE AREN’T
NO, THEY AREN’T

10. QUESTIONS & ANSWERS
In questions put the verb TO BE (AM, ARE, IS) before THE PRONOUS (I, YOU, etc.):
Are you English? NOT You are English?
Do not use contractions in positive short answers: Are you Spanish? Yes, I am NOT Yes, I’m.
In negative answers, you can use both full or contracted forms: Are you Irish? No, I am not or No, I’m not.