El verbo "to be" en inglés

El verbo to be en inglés
To be: ser o estar
El verbo to be en inglés se traduce en español como los verbos ser o estar. Se usa to be, entonces, de la misma manera que se usan ser o estar en el modo infinitivo.
Por ejemplo:
I am going to be sad when I leave the party. --> Voy a estar triste cuando me vaya de la fiesta. She is going to be a teacher. --> Ella va a ser maestra.
El verbo to be en inglés es un verbo muy común ya que tiene varios usos:
- Se usa como un verbo auxiliar con los tiempos presente continuo o pasado continuo:
- She is eating a sandwich.
- I was watching a movie last night.
- Se usa antes de adjetivos y sustantivos para mostrar identidad o estado de ser:
- Susan and Anne are sisters.
- I am hungry.
- That painting is beautiful.
- Se usa como un verbo auxiliar en el futuro cuando se usa going to:
- We are going to a party tomorrow.
- Natalia is going to get a haircut.
- Se usa para indicar edad:
- She is 25 years old.
- I am 70 years old.
- Se usa para indicar ubicación:
- The park is two blocks away.
- My office is in the city.
Se conjuga de la siguiente manera:
Imperative
be
you are
he/she is
we are
you are
they are
Preterite
I was
you were
he/she was
we were
you were
they were
Present Continuous
I am being
you are being
he/she is being
we are being
you are being
they are being
Present Perfect
I have been
you have been
he/she has been
we have been
you have been
they have been
Past Continuous
I was being
you were being
he/she was being
we were being
you were being
they were being
Past Perfect
I had been
you had been
he/she had been
we had been
you had been
they had been
Future
I will be
you will be
he/she will be
we will be
you will be
they will be
Future Perfect
I will have been
you will have been
he/she will have been
we will have been
you will have been
they will have been
Future Continuous
I will be being
you will be being
he/she will be being
we will be being
you will be being
they will be being
Present Perfect Continuous
I have been being
you have been being
he/she has been being
we have been being
you have been being
they have been being
Future Perfect Continuous
I will have been being
you will have been being
he/she will have been being
we will have been being
you will have been being
they will have been being
Past Perfect Continuous
I had been being
you had been being
he/she had been being
we had been being
you had been being
they had been being
Vea la conjugación de [to be][2]
[2]: http://www.spanishdict.com/conjugate/to be