Irregular Verbs
English verbs have five basic forms: the base form, the - S form, the - ing form, the past form, and the past participle form. There are two types of past forms for regular and irregular verbs. The past forms of irregular verbs are challenging because there are no easy rules for forming them. Some are the same as the base form, some change their vowels and/or endings, and a few are completely different from the base forms. Here is a list of examples of irregular verbs: