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NotesSpanish B HLTopic 3.3Present subjunctive
Back to Spanish B HL Topics
3.3.36 min read

Present subjunctive (Spanish B HL)

IB Spanish B · Unit 3

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Contents

  1. 1What it is
  2. 2The forms
  3. 3When to use it
  4. 4In action
  5. 5Common errors
Present subjunctive — meeting the mood: Don't be put off: the presente de subjuntivo forms and the basic idea of the mood are introduced exactly as they are at SL, so this is shared content.

What changes at HL

  • The HL reward is voice.
  • The subjunctive lets you express doubt, wishes and feeling with nuance across longer writing.
  • It helps when you interpret your literary works.
  • Focus on the forms here first; the triggers come together once they're automatic.
The present subjunctive (the forms): The present subjunctive (el presente de subjuntivo) is a special verb form Spanish uses for things that are wished for, doubted, or not yet real — usually after que.

What this micro covers

  • In this micro you'll learn how to build it.
  • The full list of when to use it comes in the next micro (3.3.4).
  • The key trick: the subjunctive endings are the opposite vowel of the present indicative.
el subjuntivo
the subjunctive — the mood for wishes, doubt and the unreal
el indicativo
the indicative — the ordinary mood for stating facts (estudio, como)
la forma yo
the present yo form — the starting point for building the subjunctive
la vocal opuesta
the opposite vowel — -ar verbs take e, -er/-ir verbs take a
el disparador
the trigger — the word or phrase before que that calls for the subjunctive
irregular
irregular — a few common verbs have their own subjunctive form (ser → sea)
Why it matters: Using the subjunctive correctly is a clear marker of a higher-level Spanish answer. Even getting one phrase right — espero que tengas un buen día — lifts the sophistication of your speaking and writing. Master the forms here first, then the triggers in 3.3.4.

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Yo form, drop -o, add the opposite vowel: Build the present subjunctive in three steps, starting from the present yo form.

Three steps

  • (1) Take the present yo form.
  • (2) Drop the final -o.
  • (3) Add the opposite-vowel endings: e for -ar verbs (-e/-es/-e/-emos/-éis/-en), a for -er/-ir verbs (-a/-as/-a/-amos/-áis/-an).
Why start from yo: Stem changes and irregular yo forms carry over automatically (tengo → tenga).
Persona-ar (hablar)-er (comer)-ir (vivir)
yohablecomaviva
túhablescomasvivas
él / ella / ustedhablecomaviva
nosotros / nosotrashablemoscomamosvivamos
vosotros / vosotrashabléiscomáisviváis
ellos / ellas / ustedeshablencomanvivan
InfinitivoSubjuntivo (yo)Pista
serseacompletely irregular
irvayacompletely irregular
haberhaya→ hay becomes haya
sabersepairregular root sep-
dardécarries an accent (dé)
estarestéaccent on the é
The opposite-vowel rule: Think opposite vowel: an -ar verb (hablar) swaps to e (hable); an -er/-ir verb (comer, vivir) swaps to a (coma, viva). Six common verbs ignore the rule entirely — learn sea, vaya, haya, sepa, dé, esté by heart.

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Where you'll see it (a quick look): You'll meet the subjunctive most often in a second clause after que, when the first clause expresses a wish, hope or doubt.

For now

  • Just recognise the shape: a trigger phrase + que + a verb in the subjunctive.
  • The full set of triggers is covered in the next micro (3.3.4).

La pista del que

  • Wish — Quiero que vengas a mi casa. (I want you to come to my house.)
  • Hope — Espero que apruebes el examen. (I hope you pass the exam.)
  • Doubt — No creo que llueva mañana. (I don't think it will rain tomorrow.)
Forms first, triggers next: Don't worry about memorising every trigger yet — that's the job of micro 3.3.4. Right now, focus on building the form correctly: yo form → drop -o → add the opposite vowel. If you can produce hable, coma, viva without thinking, the usage rules will be easy.
Building the form, sentence by sentence: Here are short sentences that each show the present subjunctive after que.

How to read them

  • The note in brackets reminds you which verb it came from.
  • Read each once, then tap Ver traducción for the English or the audio button to hear it.
  • Notice the opposite-vowel pattern at work.

El subjuntivo en acción

Las formas, frase a frase

  1. Mis padres quieren que yo estudie más este año.
  2. Espero que tú comas algo antes de salir.
  3. Es importante que nosotros vivamos cerca del colegio.
  4. Ojalá que el examen sea fácil y que haya tiempo de sobra.
  5. Quiero que ellos vayan a la fiesta y que sepan la dirección.
Drill the build, not the meaning: For each verb, say it out loud: yo form → drop -o → opposite vowel. estudio → estudi- → estudie; como → com- → coma. The irregulars (sea, vaya, haya, sepa) you just have to know — they appear constantly, so they're worth memorising first.

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The slips to watch for: Two mistakes dominate: using the indicative after a trigger (writing estudia where you need estudie), and forgetting the irregular subjunctives (writing sabe instead of sepa). Compare the right version with the typical mistake and the fix becomes clear.

Correcto

  • Quiero que estudies más.
  • Espero que vengas pronto.
  • Es importante que sepas la verdad.

Error común

  • Quiero que estudias más.
  • Espero que vienes pronto.
  • Es importante que sabes la verdad.
Swap the vowel, learn the irregulars: After a trigger + que, change the vowel: -ar → e, -er/-ir → a. And keep the six irregulars at your fingertips — sea, vaya, haya, sepa, dé, esté — because they appear in almost every subjunctive sentence.

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Corrige el error de subjuntivo en estas frases: Quiero que estudias más. y Espero que sabes la verdad. Escribe la versión correcta. [2 marks]

Related Spanish B HL Topics

Continue learning with these related topics from the same unit:

3.1.1Present regular3.1.2Present irregular3.1.3Ser vs Estar3.1.4Gustar-type verbs
View all Spanish B HL topics
Improve your exam techniqueCommand terms, paper structure, and mark-scheme tips for Spanish B HL
Previous3.3.2ConditionalNextUsing the subjunctive3.3.4

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