ser Present Conjugation
ser — to be
The present of ser is highly irregular and essential: soy, eres, es, somos, sois, son.
ser Present Forms
When to Use the Present
Use the present tense to define identity, profession, origin, or permanent characteristics. It is the 'DNA' verb of Spanish, used for facts that don't change frequently.
Notes on ser in the Present
Ser is completely irregular in the present. It does not follow any -er verb patterns and must be memorized as its own set of forms.
Example Sentences
Soy de Madrid.
I am from Madrid.
yo
Tú eres muy inteligente.
You are very intelligent.
tú
Él es médico en el hospital.
He is a doctor at the hospital.
él/ella/usted
Nosotros somos amigos desde niños.
We are friends since we were kids.
nosotros
Common Mistakes
Mistake: Using 'estoy' instead of 'soy' for professions.
Correct: Use 'soy médico' instead of 'estoy médico'.
Why: Ser is used for permanent roles and careers, while estar is for temporary states.
Master Spanish verbs in context
Memorizing tables only gets you so far. Read 200+ illustrated and narrated Spanish stories to see verbs like 'ser' used naturally — in the tenses you're learning.
Related Tenses
Preterite
yo: fui
The preterite of ser shares the exact same forms as the verb 'ir' (to go): fui, fuiste, fue, fuimos, fuisteis, fueron.
Imperfect
yo: era
The imperfect of ser is one of only three irregular verbs in this tense: era, eras, era, éramos, erais, eran.
Future
yo: seré
The future of ser is regular: seré, serás, será, seremos, seréis, serán.
Conditional
yo: sería
The conditional of ser is regular: sería, serías, sería, seríamos, seríais, serían.
Present Subjunctive
yo: sea
The present subjunctive of ser is irregular: sea, seas, sea, seamos, seáis, sean.
Imperfect Subjunctive
yo: fuera
The imperfect subjunctive of ser uses the 'fuer-' stem: fuera, fueras, fuera, fuéramos, fuerais, fueran.
Affirmative Imperative
yo: sé
The affirmative imperative of ser is used for commands: sé, sea, seamos, sed, sean.
Negative Imperative
yo: no seas
The negative imperative of ser uses 'no' + present subjunctive: no seas, no sea, no seamos, no seáis, no sean.