To form the past perfect progressive, use the auxiliary (helping) verb had + been + verbing (present participle). Have/Has + Been + Verbing. I / You / We / They He / She / It. for two hours when he got up and left. Note: The order of phrases may be switched, but the meaning will stay the same.
Conjugar verbo wait en inglés en todos los tiempos verbales: presente, pasado, futuro, subjuntivo, imperfecto y más.
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present perfect tense of wait