What are the rules of changing irregular verbs to simple past tense

An irregular verb is one that does not form its simple past tense or its past participle by adding "-ed" or "-d" to the base form. Irregular verbs contrast with regular verbs, which form the simple past tense and past participle by adding "-ed" or "-d."

A irregular verb does not form a simple past tense like adding "-ed" or "-d" Irregular verbs contrast with regular verbs, which form the simple past tense and past participle by adding "-ed" or "-d."

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