Breakdown of Pensavo che la spia avesse rivelato il segreto.
avere
to have
il segreto
the secret
pensare
to think
che
that (conjunction introducing a clause)
Questions & Answers about Pensavo che la spia avesse rivelato il segreto.
Why do we use avesse rivelato (pluperfect subjunctive) here instead of rivelasse (imperfect subjunctive)?
The main verb pensavo sets the sentence in the past. We use the pluperfect subjunctive (trapassato congiuntivo) because the spy revealing the secret happened before you thought about it. If the two actions were happening at the same time ("I thought the spy was revealing the secret"), you would use the imperfect subjunctive (rivelasse).
Could I say ho pensato instead of pensavo?
It is grammatically possible, but pensavo is much more natural here. The imperfect tense is used for ongoing mental states or beliefs in the past, translating roughly to "I was of the belief that...". Using the passato prossimo (ho pensato) would sound like a sudden, single thought crossed your mind at one specific moment.
Why use avesse instead of fosse for the auxiliary verb?
The verb rivelare (to reveal) takes a direct object—in this sentence, it is il segreto (the secret). Because it is a transitive verb (a verb acting on an object), it must use avere as its helping verb to form compound tenses.
La spia is feminine. Does the word change if the spy is a man?