精选优质文档-倾情为你奉上八年级下时态总结：过去进行时1. 过去进行时的构成过去进行时由was/were+doing构成2. 过去进行时的用法1） 表示过去某一时刻或过去一段时间内正在进行的动作。常和表示过去的时间状语then，at that time，this time yesterday，at ten yesterday等连用，或用另一动作来表示过去的时间。如：-What were you doing at nine last night?-I was watching TV at that time. He was reading when I came in. I was doing my homework while my parents were watching TV. 2） 过去进行时常和always等表频率的副词连用，表示过去频繁发生的习惯性动作，此时的过去进行时带有一定的感情色彩。如：Alice was always changing her mind. 3. 一般过去时和过去进行时的区别一般来
