Tabla de conjugación del verbo "To use"
Present Simple (Presente Simple)Present Simple Continuous (Presente Continuo)Past Simple (Pasado Simple)Past Continuous (Pasado Continuo)Future Simple (Futuro Simple)Present Perfect Simple (Presente Perfecto)Present Perfect Continuous (Presente Perfecto Continuo)Negative
He/She/It hasn't been using.Interrogative
Has he/she/it been using? Past Perfect Simple (Pasado Perfecto)Past Perfect Continuous (Pasado Perfecto Continuo)Negative
He/She/It hadn't been using.Interrogative
Had he/she/it been using? Future Perfect (Futuro Perfecto)Negative
He/She/It won't have used.Interrogative
Will he/she/it have used? Conditional (Condicional)Conditional Perfect (Condicional Perfecto)Negative
He/She/It wouldn't have used.Interrogative
Would he/she/it have used?