There are action verbs, helping verbs and linking verbs. That would equal three different verbs in the English language. Adverbs are not verbs. They are NOT verbs at all. Who knows who named it?(k)
Three simple tenses. Three perfect tenses. Six progressive forms. So, twelve. In order: /_Past Perfect_/_Past_/_ Present Perfect_/_Present_/_Future Perfect_/_Future +progressive (continuous) in all...