we often use expressions with agowith the past simple:.She played a lot of tennis when she was younger. something that was true for some time in the past:.They always enjoyed visiting their friends. When I was a boy, I walked a mile to school every day. something that happened several times in the past:.something that happened once in the past:.Here are the most common irregular verbs in English, with their past tense forms: Base form With most verbs, the past tense is formed by adding –ed: call edīut there are a lot of irregular past tense forms in English.