Si Clauses: Past Unreal
Si Clauses: Past Unreal
The last of the three si-clause patterns — for things that didn't happen and can no longer happen, since the moment has already passed.
Grammar Comparison
Grammar Comparison
Si + pluperfect subjunctive, result in the conditional perfect
si hubiera estudiado, habría aprobado (if I had studied, I would have passed) — the exam is already over
if I had studied, I would have passed — the same double-past structure
For a condition about the past that didn't happen — and can't be changed now — si takes the pluperfect subjunctive (hubiera + participle) and the result clause takes the conditional perfect (habría + participle), both built from forms you already know combined in a new way. English mirrors this exactly with its own 'had studied' / 'would have passed' pairing, making this one of the more transferable advanced structures in the course.
Hubiera and hubiese are interchangeable here
si hubiera sabido / si hubiese sabido — both mean exactly the same thing
if I had known — one form only
Just like the regular imperfect subjunctive had two equally valid ending sets, the pluperfect subjunctive's helper verb can be either hubiera or hubiese with no difference in meaning — hubiera is more common in everyday speech, but you'll encounter hubiese regularly in writing, especially from Spain.
Vocabulary
Vocabulary
- English
- if I had studied
- English
- I would have passed
- English
- if I had known
- English
- I would have gone
- English
- if you had called me
- English
- I would have helped you
- English
- if we had left earlier
- English
- it wouldn't have happened
- English
- I wish I had gone
- English
- had I known