He finds it challenging to memorize all the irregular verbs in English.
Ему трудно запомнить все неправильные глаголы в английском языке.
Definitionen
Irregular verbs are verbs that do not follow the standard pattern of conjugation in the past tense and past participle forms, meaning they do not simply add '-ed' to the base form. Instead, they have unique forms that must be memorized, such as 'go' becoming 'went' and 'have' becoming 'had.'