壹.结构 : to do (否定 ) not to do 二 . 时态与语态主动语态被动语态一般式进行式完成式完成进行式不定式 to do to be done to be doing to have done to have been done to have been doing--------------------1. 作主语2. 作宾语3. 作宾语补足语4. 作定语5. 作状...

时间:2024-11-21 10:18栏目:中学教育