The teachers are having a meeting.变被动句时have为什么成了held
问题描述：
The teachers are having a meeting.变被动句时have为什么成了held
答
变为被动式以后,主语变成了meeting
应该是the meeting is held by the teacher
会议被举行,举行是HOLD 过去式HELD为什么have不变成had而要变成held 请再详细些好吗？have的过去式是had held是hold的过去式 have a meeting是人在开会 hold a meeting 是举行会议