The indicative states facts. The subjunctive expresses subjectivity: doubt, desire, emotion, or a recommendation — things that are hoped for, uncertain, or not yet real.
It almost always shows up in a second clause, after que, when the subject changes between the two clauses:
Start from the yo form of the present indicative, drop the -o, and add the opposite endings: -ar verbs take e endings, -er/-ir verbs take a endings.
| Subject | hablar | comer | vivir |
|---|---|---|---|
| yo | hable | coma | viva |
| tú | hables | comas | vivas |
| él / ella / usted | hable | coma | viva |
| nosotros | hablemos | comamos | vivamos |
| vosotros | habléis | comáis | viváis |
| ellos / ellas / ustedes | hablen | coman | vivan |
The yo-form rule does the heavy lifting. Any irregularity in the yo form carries straight through: tengo → tenga, salgo → salga, conozco → conozca, hago → haga, digo → diga. Learn the yo form and the subjunctive comes free.
Only a handful of verbs can't be built from the yo form, because their yo form doesn't end in -o. They're worth memorising outright.
| Verb | Subjunctive | Verb | Subjunctive |
|---|---|---|---|
| ser | sea, seas, sea… | ir | vaya, vayas, vaya… |
| saber | sepa, sepas, sepa… | haber | haya, hayas, haya… |
| dar | dé, des, dé… | estar | esté, estés, esté… |
No change of subject, no subjunctive. If both halves of the sentence share the same subject, Spanish uses an infinitive instead: Quiero hablar español (I want to speak) vs. Quiero que hables español (I want you to speak). This single test prevents most beginner subjunctive errors.
Spelling changes. Verbs in -car, -gar and -zar adjust to keep the sound: buscar → busque, llegar → llegue, empezar → empiece. It's spelling, not a new irregularity.
1.Espero que ___ (tener, tú) un buen día.
2.Es necesario que ___ (llegar, nosotros) a tiempo.
3.Dudo que Marta ___ (saber) la respuesta.
4.Quiero que ___ (hacer, tú) la tarea ahora.
5.Which sentence is correct?
6.Es importante que ___ (estudiar, tú) todos los días.
7.No creo que ellos ___ (poder) venir mañana.
8.Ojalá que no ___ (llover) mañana.
9.Me alegro de que ___ (estar, tú) aquí.
10.What is the present subjunctive of "ir" for yo?
11.Te recomiendo que ___ (buscar, tú) otro trabajo.
12.True or false: the subjunctive is used even when both clauses share the same subject.
Book a class with Ángel and practise expressing wishes and opinions — the subjunctive only becomes instinct through speaking.