1. IRREGULAR VERBS IN THE PRETERITE

2. Many verbs do not follow the normal rules of conjugation in the preterite.
These verbs are irregular in the preterite.

3. IR—to go
fuimos
fueron
fui
fuiste
fue

4. SER—to be
fui
fuiste
fue
fuimos
fueron

5. Meanings of IR (Pretérito)
fui – I went fuimos – we went
fuiste- you went
fue – he went fueron – they went
she went you all went
you went

6. Meanings of SER (Pretérito)
fui – I was fuimos – we were
fuiste- you were
fue – he was fueron – they were
she was you all were
you were

7. How do we know which verb is being used?
The context in which each verb is used in the sentence will clarify the meaning. The verb ser is not used very often in the preterite tense.