When to use the subjunctive: assertion, reaction and pending events
CEFR B1
What you will learn
- Contrast an asserted proposition with a wish, reaction or value judgement.
- Choose indicative for habitual or completed time clauses and subjunctive for a future event still pending.
- Choose infinitive or para que plus subjunctive according to whether the subjects coincide.
The idea
A connector is not a magic trigger. “Cuando” can introduce a habit already presented as real or an event that has not happened yet. A plain clause can assert a proposition, while a frame such as “es importante que” evaluates another subject's action. The reliable question is: does the speaker present the subordinate content as information, or place it inside a wish, reaction, evaluation, purpose or pending future?
Verbs such as querer, pedir, esperar and alegrarse, and impersonal evaluations such as es importante que, frame another subject's action instead of asserting it directly. That subordinate action takes the subjunctive.
If the same subject controls both actions, reduce the second clause to an infinitive when the construction allows it: “Espero llegar” but “Espero que llegues”.
Indicative reports a repeated, current or completed event: “Cuando abre la biblioteca, entro.” Present subjunctive points to a future occurrence that still has to become real: “Cuando abra la biblioteca, entraré.”
The main verb can be present, future, an imperative or a future-oriented periphrasis. What matters is whether the subordinate event is established or pending.
B1 mood-selection paradigm
| meaning | shape | model |
|---|---|---|
| asserted information | indicative | Sé que Clara está aquí. |
| wish / reaction / judgement with another subject | que + subjunctive | Me alegra que Clara esté aquí. |
| same subject | infinitive | Espero llegar pronto. |
| habitual or completed time | cuando + indicative | Cuando termino, cierro el archivo. |
| pending future time | cuando + subjunctive | Cuando termine, cerraré el archivo. |
| purpose with different subject | para que + subjunctive | Lo dejo para que lo leas. |
How it sounds
- Cuando recibo el pedido semanal, reviso la factura. / Cuando reciba el pedido mañana, revisaré la factura.The weekly action has occurred repeatedly, so it is presented as established. Tomorrow's delivery is not complete, so the time clause remains pending. The connector stays the same; only the status changes.
Your turn
Two or three, to check that the bit above landed.
Use the repeating reports. Cada tarde, cuando Marta ___ el informe, lo archiva. (terminar)
termina — Cada tarde presents an established routine, so the time clause uses the present indicative: termina.
Use the parcel that has not arrived yet. En cuanto ___ el paquete, te aviso. (llegar)
llegue — The arrival is pending. En cuanto therefore introduces a future-oriented present subjunctive: llegue.
Use the loose gear beside the clock. Es importante que la pieza ___ bien. (encajar)
encaje — Es importante que evaluates the subordinate state. The subordinate subject is singular; encajar keeps its j and takes the regular -ar subjunctive ending -e: encaje.
What your own language pushes you to say
Wrong Cada noche, cuando vuelva a casa, preparo la cena.
Right Cada noche, cuando vuelvo a casa, preparo la cena.
Cada noche establishes a repeated routine. A pending future context would change the reading and the mood.
Once it makes sense
The present subjunctive: build the form before choosing the moodThe imperative: choose the addressee, polarity and regional formReal si-clauses: conditions the speaker still treats as possible