"doing"的主动语态形式就是 doing本身，它表示与谓语动词的动作同时或之后发生。而"doing"的被动语态形式是 being done，表示动作是被进行的。例如：
1. She is practising speaking.
2. Mr Huntley is being held on suspicion of abducting and murdering Holly and Jessica.
此外，"having done"和"having been done"分别表示主动和被动的完成时态。例如：
1. They had finished their homework before the party started.
2. The book had been read by him when she arrived.
需要注意的是，当动名词的逻辑主语是动名词的动作的对象时，动名词应用被动语态。不及物动词则没有被动语态。例如：
1. Writing is my favorite hobby.
2. Swimming is not my cup of tea.