主动语态 被动词态
一般情况 doing being done （第一组，1样一个）
完成形式 having done having been done （第二组，1样一个）
但：必是简单的初中的学生可以看的明白的单词。谢绝复制。
1 doing
John is doing his homework in the classroom.
约翰正在做作业。
2 being done
The homework is being done by John.
约翰正在做作业
3 having done
After having done the homework,John left the classroom.
做完作业后，约翰离开了教室。
4 having been done
The homework having been done, John left the classroom.
写完作业后，约翰离开了教室。
祝你开心 满意记得采纳哦~
John is doing his homework in the classroom.
约翰正在做作业。
2 being done
The homework is being done by John.
约翰正在做作业
3 having done
After having done the homework,John left the classroom.
做完作业后，约翰离开了教室。
4 having been done
The homework having been done, John left the classroom.
写完作业后，约翰离开了教室。
祝你开心 满意记得采纳哦~
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第1个回答 2013-04-05
What are you doing ?
