imperfect tense英 [ɪmˈpɜːfɪkt tens]美 [ɪmˈpɜːrfɪkt tens]网络 未完成时; 过去不完成式; 未完成式; 未完成时态; 过去未完时态英英释义nouna tense of verbs used in describing action that is on-goingSynonym:progressiveprogressive tenseimperfectcontinuous tense双语例句