五过去进行时定义：表示过去某个时间点正在发生的事情句型结构：主语+谓语动词+（宾语）谓语动词：was/were +doing (动词ing形式)*注意：进行时态的中出现的动词必须是持续性动词，而非短暂性动词。动词ing形式的变化规则：1. 在词尾+ing，如playplaying；2. 当动词以重读闭音节结尾且结尾只有一个辅音的时候，双写末尾的辅音+ing，如runrunning；3. 当动词以辅音+e结尾时，去e+ing，如makemaking4. 不规则变化： lielying diedying例1：We were having breakfast at 8:00 this morning.例2: I was cleaning my bedroom at 7:00 last evening.例3: Mary was waiting for the school bus then.例4: You were listening to music when I saw you.句型转换：变为否定句：We
