横向到边 纵向到底:谁能告诉我一下关于过去进行时的知识啊!
来源:百度文库 编辑:神马品牌网 时间:2024/05/24 06:54:11
was/were doing
就是过去正在做什么嘛
I was reading a book when my mother entered.
They were having lunch from 11:00 to 12:00 yesterday.
神马品牌网是一部内容开放、自由的互动网络百科全书
客观、专业、权威的知识性百科全书
来源:百度文库 编辑:神马品牌网 时间:2024/05/24 06:54:11
was/were doing
就是过去正在做什么嘛
I was reading a book when my mother entered.
They were having lunch from 11:00 to 12:00 yesterday.