ser
to be (permanent)
📚 Learn when to use ser vs estar in our Ser vs Estar Grammar Guide
Non-Conjugated Forms
ser
to be (permanent)
siendo
Present Participle
sido
Used in perfect tenses
Indicative Mood
Used for statements of fact, certainty, and objective reality
| Person | |||||
|---|---|---|---|---|---|
| yo | soy | fui | era | seré | sería |
| tú | eres | fuiste | eras | serás | serías |
| él/ella/usted | es | fue | era | será | sería |
| nosotros | somos | fuimos | éramos | seremos | seríamos |
| vosotros | sois | fuisteis | erais | seréis | seríais |
| ellos/ellas/ustedes | son | fueron | eran | serán | serían |
| Quick Test | Quick Test | Quick Test | Quick Test | Quick Test |
Perfect Tenses
Compound tenses using auxiliary verb "haber" + past participle
| Person | ||||
|---|---|---|---|---|
| yo | he sido | había sido | habré sido | habría sido |
| tú | has sido | habías sido | habrás sido | habrías sido |
| él/ella/usted | ha sido | había sido | habrá sido | habría sido |
| nosotros | hemos sido | habíamos sido | habremos sido | habríamos sido |
| vosotros | habéis sido | habíais sido | habréis sido | habríais sido |
| ellos/ellas/ustedes | han sido | habían sido | habrán sido | habrían sido |
| Quick Test | Quick Test | Quick Test | Quick Test |
Subjunctive Mood
Used for doubt, emotion, desire, possibility, and hypothetical situations
| Person | ||
|---|---|---|
| yo | sea | fuera |
| tú | seas | fueras |
| él/ella/usted | sea | fuera |
| nosotros | seamos | fuéramos |
| vosotros | seáis | fuerais |
| ellos/ellas/ustedes | sean | fueran |
| Quick Test | Quick Test |
Imperative Mood
Used for commands, requests, and instructions
| Person | |
|---|---|
| yo | - |
| tú | sé |
| él/ella/usted | sea |
| nosotros | seamos |
| vosotros | sed |
| ellos/ellas/ustedes | sean |
| Quick Test |
🎯 Practice ser
Test your knowledge of ser conjugations across multiple tenses
Irregular Verb
This is an irregular verb, so it doesn't follow the standard conjugation patterns. You'll need to memorize the irregular forms, especially in the present indicative and preterite.
Usage Tips
- Indicative: Use for facts, statements, and objective reality
- Subjunctive: Use after expressions of doubt, emotion, desire, or uncertainty
- Imperative: Use for direct commands and requests
- Perfect Tenses: Use to express actions completed relative to another time
Examples and Common Phrases
Examples
Common Phrases
Verb Information
Category
Essential
Ending Type
-er verb
Verb Type
Irregular verb
Importance Rank
#1 out of 100
Usage Tips
High Priority!
This is one of the top 10 most important Spanish verbs. Make sure to practice it regularly and memorize its conjugations.
Practice Suggestion
Try creating your own sentences with this verb. Start with simple present tense sentences and gradually work up to more complex constructions.