The Preterite in Catalan grammar refers to the past tense used to express an action that has been completed in the past. The simple past, also called the preterite, is formed by adding a suffix to the verb’s root. The formation of the preterite depends on the type of verb, whether it’s an -ar, -er, or -ir verb. In addition, Catalan has irregular preterite forms for some verbs. Learning the preterite is essential for understanding and communicating events that happened in the past in Catalan.