Respuesta:
If I had known you were coming, I would have baked a cake.
If I had accepted that promotion, I would have worked in Milan.
If it had not rained, I wouldn't have gotten wet.
They had been late if they wouldn't have taken a taxi.
Explicación:
El Tercer Condicional. se considera un condicional irreal, puesto que se refiere al pasado, pero no a lo que realmente ocurrió, sino a lo que podría haber ocurrido y a cómo ese hecho habría tenido otras consecuencias. Su estructura es la siguiente:
If + Sujeto + Had + Verbo en Participio Pasado, Sujeto + would + have + verbo en participio pasado + Complemento.
