🎓 Prepared by students from Boğaziçi University

How do Si Clauses (If Statements) Work in French?

Si clauses (if clauses) in French express hypothetical or conditional situations. There are three main types, each with its own verb tense pattern: the present real, the imperfect unreal, and the pluperfect contrary-to-fact. Mastering these structures is crucial for natural French communication.

Short answer

Si clauses in French use three structures: (1) si + présent, futur (real/likely), (2) si + imparfait, conditionnel (unreal/unlikely), (3) si + plus-que-parfait, conditionnel passé (contrary-to-fact). Each follows a specific tense sequence.

Three Si Clause Types: Tense Patterns

x: Si Clause Type · y: Tense SequenceType 1: RealType 2: UnrealType 3: Contrary

Step-by-step worked examples

Type 1 (Real): Fill: Si tu travailles, tu __ (réussir). (If you work, you will succeed.)

Type 1: si + présent, futur
Si clause: 'tu travailles' (présent)
Main clause: 'tu réussiras' (futur)
Answer: Si tu travailles, tu réussiras.

Type 2 (Unreal): Fill: Si j'avais de l'argent, je __ (voyager). (If I had money, I would travel.)

Type 2: si + imparfait, conditionnel
Si clause: 'j'avais' (imparfait)
Main clause: 'je voyagerais' (conditionnel)
Answer: Si j'avais de l'argent, je voyagerais.

Type 3 (Contrary-to-fact): Fill: Si j'avais étudié, je __ (réussir). (If I had studied, I would have passed.)

Type 3: si + plus-que-parfait, conditionnel passé
Si clause: 'j'avais étudié' (plus-que-parfait)
Main clause: 'j'aurais réussi' (conditionnel passé)
Answer: Si j'avais étudié, j'aurais réussi.

Flashcards

Quick quiz

Q1.Complete: Si tu __ (étudier), tu réussiras l'examen.

Correct answer: A. Type 1: si + présent (étudies) + futur (réussiras). This is a likely outcome.

Q2.Which si clause is contrary-to-fact (past impossible)?

Correct answer: C. Type 3 (plus-que-parfait + conditionnel passé) expresses regret about the past.

Q3.Complete: Si j' (avoir) plus de temps, je (lire) ce livre.

Correct answer: B. Type 2: si + imparfait (avais) + conditionnel (lirais). Unreal wish.

Q4.Why is this wrong? 'Si tu iras...'

Correct answer: A. Si is never followed by future. Use: Si tu vas (Type 1) or Si tu allais (Type 2).

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Common mistakes

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Using future after si: 'Si tu iras...' — Correct: Use présent (Type 1): 'Si tu vas...'

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Using conditional after si: 'Si tu irais...' — Correct: Conditional goes in main clause: 'Si tu avais du temps, tu irais.'

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Confusing Type 2 and Type 3: 'Si j'avais étudié, je réussirais maintenant.' — Correct: Type 2 (now): Si + imparfait, conditionnel. Type 3 (past): Si + plus-que-parfait, conditionnel passé.

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Skipping the si clause: 'Je voyagerais si...' (starting with main clause). — Correct: Si clause typically comes first: 'Si j'avais de l'argent, je voyagerais.'

FAQ

What are the three types of si clauses?

Type 1 (real/likely): si + présent, futur. Type 2 (unreal/unlikely): si + imparfait, conditionnel. Type 3 (impossible/past): si + plus-que-parfait, conditionnel passé.

When do you use Type 2 si clauses?

When expressing a wish, imagination, or something unlikely now: 'Si j'étais riche...' (If I were rich [but I'm not]...).

Can you use Type 3 si clauses for present situations?

No. Type 3 is only for past regrets or impossible past conditions. For present unreal, use Type 2.

Is word order important in si clauses?

Si clause typically comes first, but can come second. The tense sequence stays the same: 'Tu réussiras si tu travailles.'