Ser Conjugation

Ser is a Spanish irregular ER verb meaning "to be". Irregular verbs are verbs which do not follow the standard conjugation patterns of Spanish regular verbs.

Ser is ranked on the 100 Most Used Spanish Verbs Poster as the #1 most used irregular verb.

Ser Conjugation

Pronoun	Conjugation	Translation
Yo	soy	I am
Tú	eres	You are
Él/Ella/Ud.	es	He/She is
Nosotros	somos	We are
Vosotros	sois	You (plural) are
Ellos/Ellas/Uds.	son	They are

* Irregular forms are highlighted in red

Ser Participio

The Participio or Past Participle of Ser is sido. This is used to form the Ser Present Perfect and the Ser Past Perfect.

Ser Gerundio

The Gerundio or Present Participle of Ser is siendo. This is used to form the Ser Present Continuous.

Ser Present Continuous

The Present Continuous (presente progresivo or presente continuo) is used to describe actions that are happening right now or around now. To form the present continuous tense, combine the Estar conjugation with the Ser Gerundio (or Present Participle).

Example: Él está siendo muy egoísta últimamente. (He is being very selfish lately.)

Pronoun	Conjugation	Translation
Yo	estoy siendo	I am being
Tú	estás siendo	You are being
Él/Ella/Ud.	está siendo	He/She is being
Nosotros	estamos siendo	We are being
Vosotros	estáis siendo	You (plural) are being
Ellos/Ellas/Uds.	están siendo	They are being

* Irregular forms are highlighted in red

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Ser Past Tense

Spanish has several past tenses, each serving a specific purpose to express actions in the past.

Additionally, the use of Spanish past tenses can vary significantly across regions due to cultural and linguistic differences.

These are some of the most commonly used Spanish past tenses:

Ser Preterite

The Preterite Tense (Pretérito or Indefinido) is used for completed actions in the past that have a clear beginning or end.

Example: Ayer comí pizza. (Yesterday, I ate pizza).

Pronoun	Conjugation	Translation
Yo	fui	I was
Tú	fuiste	You were
Él/Ella/Ud.	fue	He/She was
Nosotros	fuimos	We were
Vosotros	fuisteis	You (plural) were
Ellos/Ellas/Uds.	fueron	They were

* Irregular forms are highlighted in red

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Ser Imperfect

The Imperfect Tense (Imperfecto) describes ongoing, habitual, or background actions in the past, often without a defined start or end.

Example: Cuando era niño, jugaba fútbol todos los días. (When I was a child, I used to play soccer every day).

Pronoun	Conjugation	Translation
Yo	era	I used to be
Tú	eras	You used to be
Él/Ella/Ud.	era	He/She used to be
Nosotros	éramos	We used to be
Vosotros	erais	You (plural) used to be
Ellos/Ellas/Uds.	eran	They used to be

* Irregular forms are highlighted in red

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Ser Present Perfect

The Present Perfect Tense (Presente Perfecto) is used to describe actions that have been completed recently or have relevance to the present moment. The Present Perfect Tense is formed by combining the Present Tense of the auxiliary verb Haber Conjugation with the Ser Participio.

Example: He leído ese libro. (I have read that book).

Pronoun	Conjugation	Translation
Yo	he sido	I have been
Tú	has sido	You have been
Él/Ella/Ud.	ha sido	He/She has been
Nosotros	hemos sido	We have been
Vosotros	habéis sido	You (plural) have been
Ellos/Ellas/Uds.	han sido	They have been

* Irregular forms are highlighted in red

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Ser Past Perfect

The Past Perfect Tense (Pluscuamperfecto) refers to actions completed before another action in the past. The Past Perfect Tense is formed by combining the Imperfect Tense of the auxiliary verb Haber Conjugation with the Ser Participio.

Example: Había comido antes de salir. (I had eaten before leaving).

Pronoun	Conjugation	Translation
Yo	había sido	I had been
Tú	habías sido	You had been
Él/Ella/Ud.	había sido	He/She had been
Nosotros	habíamos sido	We had been
Vosotros	habíais sido	You (plural) had been
Ellos/Ellas/Uds.	habían sido	They had been

* Irregular forms are highlighted in red

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Ser Future Tense

The Future Tense (Futuro) is used to describe actions or events that will happen in the future. It often expresses certainty or plans about what is yet to come.

Example: Mañana comeré pizza. (Tomorrow, I will eat pizza).

Pronoun	Conjugation	Translation
Yo	seré	I will be
Tú	serás	You will be
Él/Ella/Ud.	será	He/She will be
Nosotros	seremos	We will be
Vosotros	seréis	You (plural) will be
Ellos/Ellas/Uds.	serán	They will be

* Irregular forms are highlighted in red

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Ser Conditional Tense

The Conditional Tense (Condicional) is used to express hypothetical situations, polite requests, or actions that depend on other conditions. It is often used in combination with the Future Tense.

Example: Me gustaría un café, por favor.(I would like a coffee, please).

Pronoun	Conjugation	Translation
Yo	sería	I would be
Tú	serías	You would be
Él/Ella/Ud.	sería	He/She would be
Nosotros	seríamos	We would be
Vosotros	seríais	You (plural) would be
Ellos/Ellas/Uds.	serían	They would be

* Irregular forms are highlighted in red

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Ser Subjunctive

The Subjunctive Tense (Subjuntivo) is used to express doubt, uncertainty, desire, or emotion. It is often used in dependent clauses introduced by specific conjunctions or verbs.

Example: Espero que seas feliz. (I hope you are happy).

Pronoun	Conjugation	Translation
Yo	sea	I am
Tú	seas	You are
Él/Ella/Ud.	sea	He/She is
Nosotros	seamos	We are
Vosotros	seáis	You (plural) are
Ellos/Ellas/Uds.	sean	They are

* Irregular forms are highlighted in red

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Spanish Regular Verbs

A verb is called a regular verb when its conjugation follows a consistent and predictable pattern. In contrast, a verb that does not follow these standard patterns is called an irregular verb. In Spanish, the three regular conjugation patterns are based on the verb endings: -AR, -ER, and -IR.

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Spanish Conjugation Chart

Looking for more Spanish verbs like Ser? Check out our Spanish Conjugation Chart, the 100 Most Used Spanish Verbs Poster!

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Spanish Verbs List