This document explains progressive verb tenses. It defines progressive as referring to actions that take place over time rather than a single moment. The three progressive tenses are the present progressive, past progressive, and future progressive. The present progressive uses a form of "to be" plus the present participle (-ing form) of the main verb to show an ongoing action in the present. The past progressive similarly uses a past tense form of "to be" to refer to ongoing past actions. The future progressive will use "will be" plus the present participle to refer to future ongoing actions. Examples are provided to illustrate each progressive tense.