ingles perfect present continuos

Present Perfect Continuous (Presente perfecto continuo)
El presente perfecto continuo, muchas veces tiene la equivalencia de la traducción "llevar + gerundio" en español, pero el uso de esta formaes más frecuente en inglés. Se utiliza para acciones que has empezado en el pasado pero continuan en el presente.
Present Perfect Continuous
Affirmative   
Interrogative   
Negative   
I havebeen eating.
Have I been eating?
I have not been eating.
You have been eating.
Have you been eating?
You have not been eating.
He/She/It has been eating.
Has he/she/it been eating?
He/She/It hasnot been eating.
We have been eating.
Have we been eating?
We have not been eating.
You have been eating.
Have you been eating?
You have not been eating.
They have been eating.
Have they beeneating?
They have not been eating.
Grammatical Rules (Reglas gramaticales)
Como en el presente perfecto, usamos el verbo auxiliar "to have" además de "been" (el participio pasado del verbo "to be")y más el gerundio del verbo.

Subject
Auxiliaries
Gerund
I, You, We, They
have been
talking, studying, waiting...
He, She, It
has been
talking, studying, waiting...
Structure (Estructura)1. Affirmative Sentences (Frases afirmativas)
2. EstructuraSujeto + verbo auxiliar ("to have") + "been" + gerundio.

Ejemplos:
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 They've been talking for three hours. (Han estado hablandodurante tres horas.)
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She has been studying English since she was 16. (Ha estado estudiando inglés desde que tenía 16 años.)
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 I've been waiting for you for over an hour! (¡Te llevoesperando durante más de una hora!)
3. Negative Sentences (Frases negativas)
EstructuraSujeto + verbo auxiliar ("to have") + "not" + "been" + gerundio.
Ejemplos:
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They haven't been talking for morethan a few minutes. (No han estado hablando más de unos minutos.)
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She hasn't been studying English for very long. (No ha estado estudiando inglés durante mucho tiempo.)
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Don't worry,...