El tiempo Future Perfect in Past responde a la pregunta: What was going to have happened? = ¿Qué iba a haber pasado? o What was going to have been happening? = ¿Qué iba a haber estado pasando?. Se forma: Sujeto + was/were + going to + have + verbo en participio (I was going to have worked). Sujeto + was/were + going to + have + been + verbo en progresivo (I was going to have been working).
Simple Tenses - Continuous Tenses
What was going to have happened? - ¿Qué iba a haber pasado?
I was going to have worked - Voy a haber trabajado
Bill said that he was going to have sold five cars by Friday.
Bill dijo que él iba a haber vendido cinco coches para el viernes.
Jack thought he was going to have won the Pulitzer Prize that year. Jack pensó que él iba a haber ganado el premio Pulitzer ese año.
My friends were going to have visited many countries in Europe before returning.
Mis amigos iba a haber visitado muchos países de Europa antes de regresar.
I was worried that they were going to have forgotten about my birthday
Estaba preocupado de que ellos iban a haberse olvidado de mi cumpleaños.
People told me how much the kids were going to have changed.
La gente me dijo cuanto iban a haber cambiando los niños.
I had hoped that we were going to have finished today
Yo había esperado que nosotros íbamos a haber terminado hoy.
Julia is angry because she was going to have spent the entire evening with her boss
Julia estaba enfadada porque ella iba a haber pasado la noche entera con su jefe.
What was going to have been happening? - ¿Qué iba a haber estado pasando?
I was going to have been working - Iba a haber estado trabajando
We realized that we were going to have been travelling for close to ten hours before stopping for a rest. Nos dimos cuenta de que íbamos a haber estado viajando por casi diez horas antes de deternernos para un descanso.
Sarah told me she was going to have been doing her homework by the time I arrived home.
Sara me dijo que ella iba a haber estado haciendo su tarea para el momento que yo llegara a casa.