初二英语语法——过去进行时

　　初二英语语法

过去进行时

　　do/does 的过去进行时态形式：(was/were) doing

　　do/does 的过去进行时态的被动语态：(was/were) being done

　　过去将来时态的肯定句、否定句和疑问句形式：

　　肯定句例句：I was walking down the street when a UFO landed.

　　否定句例句：I wasn't walking down the street when a UFO landed.

　　一般疑问句例句：Were you walking down the street when a UFO landed?

　　特殊疑问句例句：What were you doing when a UFO landed?

　　动词 when 和 while 的选择：when 后加瞬间动词，while 后加延续性动词。

　　例句：The boy was walking down the street when the UFO landed.

　　=While the boy was walking down the street, the UFO landed.