Ser Preterite Tense Conjugation - Conjugate Ser in Spanish Preterite Tense


Ser is a Spanish verb meaning to be. Ser is conjugated as an irregular verb in the preterite tense. Ser appears on the 100 Most Used Spanish Preterite Tense Verbs Poster as the #1 most used irregular verb.

Ser Conjugation: Preterite Tense

yo fui
fuiste
él/ella fue
ns. fuimos
vs. fuisteis
ellos/ellas fueron

*Irregular forms in bold.

Ser Participio

The participio of Ser is sido. The present perfect tense is formed by combining the auxiliary verb haber with the participio.

Ser Imperfect Root

The imperfect root of Ser is era. The imperfect tense is rarely irregular and can be easily conjugated from this form, which is the yo, and él/ella conjugation.

Regular vs. Irregular Verbs

A verb is called a regular verb when its conjugation follows a typical pattern. A verb which does not follow these patterns exactly is called an irregular verb. In Spanish Preterite Tense, the 3 regular patterns are for verbs ending in ar, er, and ir.

Spanish Preterite Tense Regular Verb Conjugation Chart

Spanish Preterite Tense Conjugation Chart

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

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