in some languages, the form of a verb that is used for an action that has not been completed in the

中文解释

未完成过去时;过去进行时 In the sentence \"He was hit by a car as he was crossing the road\", the verb \"cross\" is in the imperfect. 在句子 He was hit by a car as he was crossing the road 中，动词 cross 用的是未完成过去时。