- ¿Quién invita a Andrea?
Who invites Andrea?
El pronombre interrogativo (Who) es el sujeto de la frase, por tanto no se emplea verbo auxiliar.¿A quién invita Andrea?
Who does Andrea invite?
El pronombre interrogativo (Who) hace referencia al objeto, por tanto la interrogativa tiene auxiliar + sujeto + verbo.
(sujeto)
presente simple: Who invites Andrea?
presente continuo: Who is inviting Andrea?
futuro simple: Who will invite Andrea?
pasado simple: Who invited Andrea?
pasado continuo: Who was inviting Andrea?
(objeto)
presente simple: Who does Andrea invite?
presente continuo: Who is Andrea inviting ?
futuro simple: Who will Andrea invite ?
pasado simple: Who did Andrea invite?
pasado continuo: Who was Andrea inviting ?