查字典中考网整理了关于2020年中考英语知识点之过去进行的结构，希望对同学们有所帮助，仅供参考。
过去进行的结构
肯定句：主语+ was / were + 现在分词.
I was doing my lessons then. 那时，我在做功课。
We were cleaning the house. 我们在打扫房子。
否定句：主语+was/were not + 现在分词.
I wasnt walking down the street when a UFO landed.
疑问句：Was/Were not + 主语 + 现在分词?
Were you walking down the street when a UFO landed?
特殊疑问句：特殊疑问词 + was/were not + 主语 + 现在分词?
What were you doing when a UFO landed?