Tiempos Verbales

VERB TO BE IN PRESENT
BE

AM ARE IS

Negative Form: Am not Are notIs not

Pronouns: I You We They He She It

VERB TO BE IN PAST
BEWAS WERE

Negative Form: Was not Were not

Pronouns: I He She ItYou We They
La estructura de una oración con el VERBO TO BE en presente o pasado queda así:
Subject + To Be + Complement.
Ejemplo:
They are inMargarita. (Present)
They were in Margarita. (Past)
La estructura de una pregunta, cuyas respuestas son afirmativas o negativas queda así:
Be + Subject + Complement?
Ejemplo:
Are they inMargarita?
Were they in Margarita?
Las respuestas pueden ser cortas y largas, y quedan estructuradas asi:
AFIRMATIVAS
Cortas: Yes, + Subject + Be.
Ejemplo:
Yes, they are.
Yes, theywere.
Largas: Yes, + Subject + Be + Complement.
Ejemplo:
Yes, they are in Margarita.
Yes, they were in Margarita.

NEGATIVAS:
Cortas: No, + Subject + Be (negative form).
Ejemplo:No, they are not.
No, they were not
.
Largas: no, + Subject + Be (negative form) + Complement.
Ejemplo:
No, they are not in Margarita.
No, they were not in Margarita.

PRESENTPROGRESSIVE
El presente progresivo, es un tiempo verbal que se emplea para hablar de acciones que se están realizando en ese preciso momento, en ingles este tiempo verbal se conforma del VERBO TO BE + INGFORM. Veamos:
La estructura de una oración en present progressive queda así:
Subject + To Be + Verb ended in ING + Complement.
Ejemplo:
They...