Past Conditional for 'Future in the Past'

The condizionale passato per futuro nel passato is the standard way to express 'posteriority' (an action happening later) when the main verb is already in a past tense.

1. Formation:
It is formed using the present conditional of the auxiliary verb (essere or avere) followed by the past participle of the main verb.

• Sarei andato (I would go / I was going to go)
• Avrei mangiato (I would eat / I was going to eat)

2. Usage Context & The 'Subjunctive Trap':
This pattern typically appears in subordinate clauses after verbs of saying, thinking, or knowing in the past (e.g., dire, sapere, pensare, credere). In this construction, the main verb must be in a past tense like the passato prossimo, imperfetto, or passato remoto.

Important Note: You might have learned that verbs like pensare and credere trigger the subjunctive. However, because Italian does not have a 'future subjunctive' tense, the past conditional overrides the subjunctive rule to express a future-in-the-past action (e.g., Pensavo che saresti venuto — I thought you would come).

3. Direct vs Indirect Speech:
A great way to understand this rule is by looking at how direct speech transforms into indirect (reported) speech. When a direct quote uses the future tense, it changes to the past conditional when reported in the past:

• Direct Speech: Marco ha detto: "Lo farò io." (Marco said: "I will do it.")
• Indirect Speech: Marco ha detto che lo avrebbe fatto lui. (Marco said that he would do it.)

4. Same-Subject Rule (Implicit Clauses):
When the subject of the main clause and the subordinate clause are the same, Italian standardly drops che and uses di + present infinitive instead of the past conditional. For example, Pensavo di vincere (I thought I would win) is preferred over Pensavo che avrei vinto.

5. Register and Alternatives:
While the past conditional is the standard choice, there are three important variations:

• The 'Still Future' Exception: If the action is still in the future relative to the moment you are speaking, the futuro semplice is often preferred for clarity (e.g., Mi ha detto che verrà domani — He told me he will come tomorrow).
• The Imperfetto di Posteriorità: In informal speech, but also in journalism and narrative literature to create a sense of immediacy, the imperfetto indicativo is frequently used (e.g., Mi ha detto che veniva instead of sarebbe venuto).
• Dovere + Infinitive: In spoken Italian, the imperfect of dovere followed by an infinitive is also a common alternative (e.g., Mi ha detto che doveva partire — He told me he was going to leave).

6. Important Distinction:
Unlike the 'counterfactual' use of the condizionale passato (where an action didn't happen), in this 'future in the past' context, the action might have actually occurred; the tense simply marks the chronological order of events from a past perspective.