The verb "ser" is an irregular verb in Spanish that means "to be." Here are its conjugations in several tenses:
Present Tense
- Yo soy (I am)
- Tú eres (You are, informal)
- Él/Ella/Usted es (He/She/You are, formal)
- Nosotros/Nosotras somos (We are)
- Vosotros/Vosotras sois (You all are, informal in Spain)
- Ellos/Ellas/Ustedes son (They/You all are)
Preterite Tense
- Yo fui (I was)
- Tú fuiste (You were, informal)
- Él/Ella/Usted fue (He/She/You were, formal)
- Nosotros/Nosotras fuimos (We were)
- Vosotros/Vosotras fuisteis (You all were, informal in Spain)
- Ellos/Ellas/Ustedes fueron (They/You all were)
Imperfect Tense
- Yo era (I was)
- Tú eras (You were, informal)
- Él/Ella/Usted era (He/She/You were, formal)
- Nosotros/Nosotras éramos (We were)
- Vosotros/Vosotras erais (You all were, informal in Spain)
- Ellos/Ellas/Ustedes eran (They/You all were)
Future Tense
- Yo seré (I will be)
- Tú serás (You will be, informal)
- Él/Ella/Usted será (He/She/You will be, formal)
- Nosotros/Nosotras seremos (We will be)
- Vosotros/Vosotras seréis (You all will be, informal in Spain)
- Ellos/Ellas/Ustedes serán (They/You all will be)
Conditional Tense
- Yo sería (I would be)
- Tú serías (You would be, informal)
- Él/Ella/Usted sería (He/She/You would be, formal)
- Nosotros/Nosotras seríamos (We would be)
- Vosotros/Vosotras seríais (You all would be, informal in Spain)
- Ellos/Ellas/Ustedes serían (They/You all would be)
Subjunctive Present
- Yo sea (that I be)
- Tú seas (that you be, informal)
- Él/Ella/Usted sea (that he/she/you be, formal)
- Nosotros/Nosotras seamos (that we be)
- Vosotros/Vosotras seáis (that you all be, informal in Spain)
- Ellos/Ellas/Ustedes sean (that they/you all be)
Imperative
- Tú sé (Be, informal)
- Usted sea (Be, formal)
- Nosotros/Nosotras seamos (Let's be)
- Vosotros/Vosotras sed (Be, plural informal)
- Ustedes sean (Be, plural formal)
These are some of the common conjugations for "ser." If you need more tenses or specific usage examples, feel free to ask!