But there are irregular verbs! The big two you need to know are ‘to go’ - ‘ir’ and ‘to be’ - ‘ser’. Luckily, they’re both the same in the preterite. They become: ‘fui ...
For example, He hecho mis deberes - I have done ... Practise what you've learned about irregular verbs in the perfect tense in Spanish with this quiz. Now you have learned about irregular verbs ...