El past perfect se forma con el simple past del verbo auxiliar fo have (had) y el participio pasado del verbo que se conjuga. Damos a continuación el past perfect del verbo to work, y las correspondientes fórmulas estructurales:
Forma afirmativa
Estructura: sujeto + had + participio pasado del verbo que se conjuga.
Sin contraer Forma contraída
I had worked yo había trabajado I’d worked you’d
you had worked he had worked worked he’d
etc. worked
etc.
Forma negativa
Estructura: sujeto + had + not + participio pasado del verbo que se conjuga.
Sin contraer Forma contraída
I had not worked
yo no había trabajado you had not worked I hadn’t worked
you hadn’t worked
he had not worked he hadn’t worked
etc. etc.
Forma interrogativa
Estructura: had + sujeto + participio pasado del verbo que se conjuga.
Forma interrogativo-negativa
Estructura: had + sujeto + not + participio pasado del verbo que se conjuga.
Sin contraer Forma contraída
had I not worked? hadn’t I worked?
¿no había trabajado yo?
had you not worked? hadn’t you worked?
had he not worked? hadn’t he worked?
etc. etc.
