Spanish grammar: subjuntivo en oraciones subordinadas adverbiales

What this grammar point covers

The subjunctive in Spanish adverbial subordinate clauses is used to express uncertainty, intention, condition, purpose, or time. These clauses often start with words like 'para que', 'antes de que', 'aunque', 'cuando', etc.

When to use it

Use the subjunctive in adverbial clauses to talk about actions that are not certain, are desired, or are possible in the future. Common situations include expressing purpose, condition, time (when the action is in the future), and concession.

Key forms

• para que + subjuntivo
• antes de que + subjuntivo
• aunque + subjuntivo
• cuando + subjuntivo (for future events)
• en caso de que + subjuntivo

Examples

Tips

• Remember to use the subjunctive only when the action in the adverbial clause is uncertain, possible, or not yet realized.
• If the action is habitual or already happened, use the indicative instead of the subjunctive.
• Some conjunctions always require the subjunctive (like 'para que'), while others depend on the context (like 'cuando').

Exceptions and edge cases

• If the main action refers to something habitual or in the past, use the indicative instead of the subjunctive.