Irregular verbs in the present ... in the present tense. Radical-changing verbs take the same endings as regular verbs but the stem also changes. The verb 'to be' in Spanish - 'ser' and 'estar ...

Irregular verbs don’t follow the usual pattern in the present tense. Some irregular present tense verbs only change in the ‘I’ form. Some of the most common verbs in Spanish are irregular verbs.