future subjunctivevspresent subjunctive
/fu-TU-ro de sub-xun-TI-vo/
/pre-SEN-te de sub-xun-TI-vo/
💡 Quick Rule
Use Present Subjunctive for ALL future hypotheticals. Future Subjunctive is for old texts and legal contracts.
Think: Future Subjunctive is Formal & Fossilized. Present Subjunctive is Practical & Pervasive.
- You will encounter the future subjunctive in legal documents (e.g., contracts), classic literature (like Don Quixote), and old proverbs.
📊 Comparison Table
| Context | future subjunctive | present subjunctive | Why? |
|---|---|---|---|
| Future Condition | Cuando volviere, hablaremos. | Cuando vuelvas, hablaremos. | The future subjunctive ('volviere') is archaic. The present subjunctive ('vuelvas') is the only correct form in modern Spanish. |
| Legal Language | Quien violare esta ley... | Quien viole esta ley... | Future subjunctive is for the formal, written law. Present subjunctive is for explaining or discussing that law. |
| Proverbs | Adonde fueres, haz lo que vieres. | Adonde vayas, haz lo que veas. | The original proverb uses the 'fossilized' future subjunctive. The modern, spoken equivalent uses the present subjunctive. |
✅ When to Use "future subjunctive" / present subjunctive
future subjunctive
An almost obsolete tense used to express a hypothetical action in the future. Today, its use is limited to highly formal legal documents, literature, and some fixed expressions.
/fu-TU-ro de sub-xun-TI-vo/
Legal & Formal Documents
Si el inquilino no pagare la renta, el contrato será terminado.
Should the tenant not pay the rent, the contract will be terminated.
Proverbs & Old Sayings
Adonde fueres, haz lo que vieres.
Wherever you may go, do as you see. (When in Rome...)
Literary or Archaic Tone
Quien tal hiciere, será castigado.
Whoever should do such a thing shall be punished.
present subjunctive
The standard, modern tense for all hypothetical future situations, as well as expressing wishes, doubts, emotions, and commands about the present or future.
/pre-SEN-te de sub-xun-TI-vo/
Hypothetical Future Actions (Modern Standard)
Cuando llegues a casa, llámame.
When you get home, call me.
Wishes, Hopes & Desires
Espero que te vaya bien en el examen.
I hope you do well on the exam.
Doubt & Uncertainty
Dudo que llueva mañana.
I doubt it will rain tomorrow.
Commands & Suggestions
Te sugiero que hables con ella.
I suggest that you talk to her.
🔄 Contrast Examples
With "future subjunctive":
Si el comprador no pagare a tiempo, se anulará la venta.
Should the buyer not pay on time, the sale shall be voided. (Formal contract)
With "present subjunctive":
Si el comprador no paga a tiempo, se anulará la venta.
If the buyer doesn't pay on time, the sale will be voided. (Explaining the rule)
The Difference: The future subjunctive ('pagare') is used for the official, written legal document. When explaining this rule in normal language, you would use the present indicative ('paga').
With "future subjunctive":
Adonde fueres, ten cuidado.
To wherever you may go, be careful. (Sounds like a wise, old proverb)
With "present subjunctive":
Adonde vayas, ten cuidado.
Wherever you go, be careful. (Normal, modern advice)
The Difference: Using the future subjunctive ('fueres') makes this sound like a timeless piece of wisdom. The present subjunctive ('vayas') is how you would actually say this to a friend today.
🎨 Visual Comparison
Future Subjunctive: for old laws and literature. Present Subjunctive: for all modern future hypotheticals.
⚠️ Common Mistakes
Cuando llegare a casa, te llamaré.
Cuando llegue a casa, te llamaré.
Never use the future subjunctive in everyday conversation. For future actions after 'cuando', always use the present subjunctive.
Ojalá que el paquete llegare pronto.
Ojalá que el paquete llegue pronto.
Wishes and hopes (triggered by 'ojalá que') always use the present subjunctive for future events. The future subjunctive is incorrect here.
📚 Related Grammar
Want to understand the grammar behind this pair? Explore these lessons for a deep dive:
🏷️ Key Words
✏️ Quick Practice
Quick Quiz: Future Subjunctive vs Present Subjunctive
Question 1 of 2
You're texting a friend: 'Cuando ___ (llegar), avísame.' Which form is correct for modern Spanish?
🏷️ Tags
Frequently Asked Questions
Do I actually need to learn to conjugate the future subjunctive?
For speaking and modern writing, no. You will almost never need to produce it. However, it's very useful to learn to recognize it, so you aren't confused when you see it in formal texts, legal documents, or classic literature.
So if I want to talk about a hypothetical future event, I just use the present subjunctive?
Yes, 99.9% of the time. After conjunctions of time or condition like 'cuando' (when), 'en cuanto' (as soon as), or 'para que' (so that), if you're talking about the future, the present subjunctive is your tool. For example, 'No saldremos hasta que deje de llover' (We won't leave until it stops raining).
Is the future subjunctive disappearing from the language?
From spoken and everyday written language, it has already disappeared. It only survives in very specific, formal, and often archaic contexts, much like 'shall' or 'henceforth' in English. It's essentially a 'fossil' tense.