“e” changes to “ie”: Example: empezar: Yo empiezo, Tú empiezas, Él empieza, Nosotros empezamos, Vosotros empezáis, Ellos empiezan. There are some irregular verbs that have slight modifications, because of the sound or to follow certain spelling rules, and then there are many others that are completely changed and which you will need to memorize at the beginning.
In contrast, irregular verbs in Spanish are those that do not follow those rules, and change for different reasons.
For example, all the 'yo' forms are changed in the same way, and the same happens with the rest of the pronouns. Regular verbs are those verbs that are always conjugated according to the same rules. In the Spanish language we have regular and irregular verbs.
