3．过去进行时与一般过去时的区别 ①一般过去时往往表示某一动作已经完成.而过去进行时却表示动作在持续或未完成. She wrote a letter to her friend last night. 她昨晚给朋友写了封信. She was writing a letter to her friend last night. 她昨晚一直在给朋友写信. ②一般过去时表示只做一次动作.而过去进行时却表示动作反复地进行. She waved to me. 她朝我挥了挥手. She was waving to me. 她不断地朝我挥手. The boy jumped up and down. 这男孩跳了一下. The boy was jumping up and down. 这男孩不停地跳着. C.将来进行时 【查看更多】
