This document lists the 100 most common irregular English verbs. It shows the simple past and past participle forms of each irregular verb since these forms do not follow a regular pattern like regular verbs. Some of the most frequent irregular verbs included are: to be (was/been), to have (had/had), to do (did/done), to go (went/gone), to see (saw/seen), to come (came/come), to give (gave/given), and to take (took/taken). Learning the irregular forms of these common verbs is important for using English verbs correctly.