Lesson 36: Congiuntivo imperfetto and se-clauses — hypothetical conditions

Part 1: Why you need the imperfect subjunctive

In lessons 31–35 you learned congiuntivo presente: voglio che tu venga, non credo che sia vero, è necessario che tu studi.

But the moment the trigger verb is past or conditional, present subjunctive isn't enough. You need its "past" sister — congiuntivo imperfetto.

Present trigger → congiuntivo presente	Past / conditional trigger → congiuntivo imperfetto
Voglio che tu venga. — I want you to come.	Volevo che tu venissi. — I wanted you to come.
Sono contento che tu sia qui. — I'm glad you're here.	Ero contento che tu fossi qui. — I was glad you were here.
Non credo che sia vero. — I don't think it's true.	Non credevo che fosse vero. — I didn't think it was true.
Penso che lui abbia ragione. — I think he's right.	Pensavo che lui avesse ragione. — I thought he was right.

The main point: with a past main verb, present subjunctive won't pass. The agreement is strict: main verb in the past → subordinate clause in congiuntivo imperfetto.

But that's only half the job. The second, even more important half is the hypothetical se-clause: "if I had time, I would go to Italy". You can't build that thought in Italian without congiuntivo imperfetto.

English-speaker frame: this is the one place Italian maps onto English exactly. "If I had time, I would go" → Se avessi tempo, andrei. Both languages use a special past form (English "had" instead of "have"; Italian avessi instead of ho) in the if-clause, and a conditional (English "would go"; Italian andrei) in the result. Once you see the parallel, the syntax follows itself — the only work left is to learn the Italian forms.

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Part 2: Forms — three regular conjugations

The endings are the same for all three conjugations — only the theme vowel changes: -a- for the first, -e- for the second, -i- for the third.

Ending template

io        -ssi
tu        -ssi
lui/lei   -sse
noi       -ssimo
voi       -ste
loro      -ssero

Paradigms of the three conjugations

Person	parlare (1)	credere (2)	dormire (3)
che io	parlassi	credessi	dormissi
che tu	parlassi	credessi	dormissi
che lui / lei	parlasse	credesse	dormisse
che noi	parlassimo	credessimo	dormissimo
che voi	parlaste	credeste	dormiste
che loro	parlassero	credessero	dormissero

Note on the stress of the noi form: the stress falls on the third syllable from the end — parlassimo, credessimo, dormissimo. Say it out loud: "parl-A-ssimo", "kred-E-ssimo", "dorm-I-ssimo".

Watch out: che io and che tu are identical — parlassi / parlassi. Context will always tell you who.

Verbs in -isc-

For verbs like finire, capire, preferire, the congiuntivo imperfetto has no -isc- insert. That rule lives only in the present.

Person	finire
che io	finissi
che tu	finissi
che lui / lei	finisse
che noi	finissimo
che voi	finiste
che loro	finissero

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Part 3: The main irregulars — just a handful

In congiuntivo imperfetto almost all verbs are regular. The irregulars boil down to literally six, and their stems look like the ones you learned in imperfetto indicativo (Lesson 23).

Six iron-clad irregulars

Infinitive	Stem	Paradigm (-ssi, -ssi, -sse, -ssimo, -ste, -ssero)
essere	fo-	fossi, fossi, fosse, fossimo, foste, fossero
avere	ave-	avessi, avessi, avesse, avessimo, aveste, avessero
fare	face-	facessi, facessi, facesse, facessimo, faceste, facessero
dare	de-	dessi, dessi, desse, dessimo, deste, dessero
stare	ste-	stessi, stessi, stesse, stessimo, steste, stessero
dire	dice-	dicessi, dicessi, dicesse, dicessimo, diceste, dicessero

Memorize fossi, avessi, facessi, dessi, stessi, dicessi. These are the six forms you'll use constantly in hypothetical periods. Se io fossi te… (if I were you…), se avessi tempo (if I had time), se facessi così… (if I did this…).

Drilling — read aloud

Read three times out loud, then close the book and recite from memory:

fossi   — fossi   — fosse   — fossimo   — foste   — fossero
avessi  — avessi  — avesse  — avessimo  — aveste  — avessero
facessi — facessi — facesse — facessimo — faceste — facessero
dessi   — dessi   — desse   — dessimo   — deste   — dessero
stessi  — stessi  — stesse  — stessimo  — steste  — stessero
dicessi — dicessi — dicesse — dicessimo — diceste — dicessero

Notice: essere and dare are shorter than the rest — fossi, dessi (not fossissi, not dassi). Don't mix them up.

Slightly less frequent "semi-irregulars"

A few verbs have a slightly shortened stem (the same one you saw in imperfetto indicativo):

Infinitive	Form (io)	Translation
bere	bevessi	(if) I drank / so that I drank
porre	ponessi	(if) I placed / so that I placed
tradurre	traducessi	(if) I translated / so that I translated
condurre	conducessi	(if) I led / so that I led

The pattern: take the imperfetto indicativo stem (bevevo → beve-, ponevo → pone-, traducevo → traduce-) and add -ssi.

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Part 4: When to use it — two big classes of context

Congiuntivo imperfetto shows up in two main situations:

4.1. Sequence of tenses — main verb in the past

The same logic as with congiuntivo presente, just shifted into the past. Main verb in imperfetto / passato prossimo / passato remoto → subjunctive in imperfetto.

| Will, want | Volevo che tu venissi. — I wanted you to come. | | Emotion | Ero contento che tu fossi qui. — I was glad you were here. | | Doubt | Non credevo che fosse vero. — I didn't think it was true. | | Request | Ti ho chiesto che venissi subito. — I asked you to come right away. | | Impersonal | Era necessario che studiassi. — It was necessary that you study. | | Conjunction | Ho parlato piano perché capissi. — I spoke softly so that you'd understand. |

4.2. Hypothetical condition — "if I had…"

This is the main job of congiuntivo imperfetto. Any "if X, then Y" thought builds on it:

| Se avessi tempo, andrei al cinema. | If I had time, I'd go to the cinema. | | Se fossi ricco, comprerei una casa. | If I were rich, I'd buy a house. | | Se fossi in te, non lo farei. | If I were you, I wouldn't do it. | | Se sapessi la risposta, te la direi. | If I knew the answer, I'd tell you. |

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Part 5: The full system of se-clauses (conditional sentences)

The main rule: Italian has three types of conditional period with se. Each one has its own set of tenses.

Type 1 — Real (periodo ipotetico della realtà)

When: real, could happen. "If it is/will be, then it is/will be."

Formula:

se + PRESENTE / FUTURO  →  PRESENTE / FUTURO / IMPERATIVO

Condition	Result	Translation
Se ho tempo,	vado al cinema.	If I have time, I go to the cinema.
Se avrò tempo,	andrò al cinema.	If I have time, I'll go to the cinema.
Se piove,	non usciamo.	If it's raining, we don't go out.
Se hai fame,	mangia qualcosa.	If you're hungry, eat something.
Se mi chiami,	ti rispondo.	If you call me, I'll answer.

A nuance: in Italian, after se — unlike in Spanish — you can put either futuro (se avrò tempo) or presente (se ho tempo). Both are correct. The present is a touch more neutral.

Type 2 — Hypothetical (periodo ipotetico della possibilità)

When: unlikely, you're imagining, dreaming. "If X (now), then Y."

Formula:

se + CONGIUNTIVO IMPERFETTO  →  CONDIZIONALE PRESENTE

Condition	Result	Translation
Se avessi tempo,	andrei al cinema.	If I had time, I'd go to the cinema.
Se avessi soldi,	viaggerei per il mondo.	If I had money, I'd travel the world.
Se fossi in te,	non lo farei.	If I were you, I wouldn't do it.
Se sapessi la risposta,	te la direi.	If I knew the answer, I'd tell you.
Se vivessi in Italia,	parlerei meglio.	If I lived in Italy, I'd speak better.

The main mistake an English speaker can drift into: putting condizionale after se (because in English colloquial speech you sometimes hear "if I would have…"). ✗ Se avrei tempo — NO. ✓ Se avessi tempo — YES. After se in a hypothetical period, only congiuntivo imperfetto.

Type 3 — Counterfactual past (periodo ipotetico dell'irrealtà)

When: it didn't happen. "If I had (then) X, then Y."

Formula:

se + CONGIUNTIVO TRAPASSATO  →  CONDIZIONALE PASSATO

Condition	Result	Translation
Se avessi studiato,	avrei superato l'esame.	If I had studied, I would have passed the exam.
Se l'avessi saputo,	sarei venuto.	If I had known, I would have come.
Se fossimo usciti prima,	non saremmo arrivati tardi.	If we had left earlier, we wouldn't have been late.

Details in Lesson 37. For now just recognize the pattern: se + avessi/fossi + participio → avrei/sarei + participio. This maps perfectly onto English "If I had known, I would have come".

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Part 8: "If I were you…" — se io fossi in te

The most common way to give advice is Se io fossi in te… ("if I were you") or the shorter Se fossi in te….

Italian	English
Se io fossi in te, non lo farei.	If I were you, I wouldn't do it.
Se fossi in te, gli parlerei.	If I were you, I'd talk to him.
Se fossi al tuo posto, accetterei.	If I were in your place, I'd accept.
Io, al posto tuo, ci proverei.	In your place, I'd give it a try.
Se fossi nei tuoi panni, aspetterei.	If I were in your shoes, I'd wait.

Useful: Io, al posto tuo… — a short conversational form without se, same meaning. English has the same shortcut: "In your place, I'd…".

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Part 9: Wishes and regrets — magari, vorrei

A whole family of "I wish…", "I'd like…" expressions runs on congiuntivo imperfetto:

Italian	English
Magari avessi più tempo!	I wish I had more time!
Magari potessi aiutarti.	I wish I could help you.
Magari fosse così semplice!	If only it were that simple!
Vorrei viaggiare di più.	I'd like to travel more.
Mi piacerebbe vivere vicino al mare.	I'd like to live near the sea.
Che peccato che non possa venire!	What a shame I can't come!

A subtle point: Magari + congiuntivo imperfetto = "I wish…" (not real now). Magari + congiuntivo presente = "maybe, hopefully, I hope that…". Compare: Magari venga (I hope he comes) vs Magari venisse (I wish he'd come).

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