VOA慢速英语:现在完成时讲解 Part Two

aspect – n. grammar : the characteristic of a verb that expresses the way an action happens. A verb's aspect shows whether an action happens one time and stops quickly, happens repeatedly, or happens continuously.

mood – n. grammar : a set of forms of a verb that show whether the action or state expressed by the verb is thought of as a fact, a command, or a wish or possibility

past participle – n. grammar: the form of the verb that is used with "have" in perfect tenses and with "be" in passive constructions

narrative – adj. having the form of a story; of or relating to the process of telling a story

crutch – n. a long stick with a padded piece at the top that fits under a person's arm — usually plural