work – work ed – work ed / like – like d – like d / cry – cr ied – cr ied). Most verbs in English are regular verbs, which means they form their past tense and past participle forms by adding -ed, -d, or -ied to the base form of the verb (e.g. Irregular verbs are those verbs that do not follow the standard conjugation rules. Tips For Teach Irregular Verbs What Are Irregular Verbs?.