Subjuntivo: extended uses
Last lesson covered three classic subjunctive triggers (wishes, emotions, doubt). Today: three more — after future-time conjunctions, in relative clauses about something not-yet-real, and in impersonal expressions. This covers most of the remaining subjunctive at B1 level.
Future-time conjunctions: cuando, hasta que, en cuanto
These trigger the subjunctive ONLY when talking about the future (something that hasn't happened yet). Cuando llegues, te llamaré (when you arrive, I'll call you). Hasta que vuelva, no comeremos (until he returns, we won't eat). En cuanto termine, salgo (as soon as I finish, I'm leaving). Note: for habits or past actions — NO subjunctive: Cuando llego a casa, ceno (when I get home, I have dinner — every day, real).
Purpose and condition: para que, antes de que, sin que
These ALWAYS take the subjunctive. Te lo digo para que sepas (I'm telling you so you know). Antes de que vengas, voy a limpiar (before you come, I'll clean up). Sin que nadie lo sepa (without anyone knowing). After aunque, subjunctive if the fact is uncertain: Aunque llueva, iré (even if it rains, I'll go — hypothetical). Indicative if certain: Aunque llueve, voy (even though it's raining, I'm going — fact).
Looking for something unspecified — relative clauses
When the speaker is describing something that might not exist yet. Busco un libro que sea fácil (I'm looking for a book that's easy — any easy book). vs Tengo un libro que es fácil (I have a book that's easy — specific one). Necesito a alguien que hable ruso (I need someone who speaks Russian). No hay nadie que sepa la respuesta (there's nobody who knows the answer). Specific and real → indicativo. Still hunting → subjunctive.
Impersonal expressions with 'es + …'
Most impersonal expressions about evaluation, importance, or necessity require the subjunctive. Es importante que estudies (it's important that you study). Es necesario que vengas (it's necessary that you come). Es mejor que descansemos (it's better that we rest). Es raro que no llame (it's strange that he isn't calling). Exceptions: es verdad que and es cierto que take the indicative — they assert a fact.
The same fork keeps coming back
A huge chunk of B1-B2 is recognizing when the same construction needs subjunctive vs indicative. Cheat sheet: certainty about a fact → indicativo. Wish / doubt / hypothesis / unspecified / impersonal evaluation → subjunctive. When in doubt, ask: 'can I guarantee this is true?' If yes — indicativo. If no — subjunctive.
Quick training dialog
—¿Conoces a alguien que hable inglés? (do you know someone who speaks English? — looking). —Sí, conozco a Pablo, que habla inglés (yes, I know Pablo, who speaks English — specific person). Feel the difference? Same sentence, same verb — but hable vs habla changes everything.
