关于英语非谓语问题非谓语doing having done to do to have done to be doing

非谓语中to be done =doing? 非谓语动词,doing to do done 的用法区别 非谓语动词,to do doing done的区别 非谓语having done与to have done 非谓语动词用法to have done/having done/to have been done/having bee 怎么区分谓语动词,to do doing done 和to be doing to be done to have do 在英语的非谓语中,ed,to do,ing,have done,to be done分别应该怎么用? 非谓语 to do/do/doing/done的用法?主动语态下 被动语态下 是怎样?have l 非谓语动词doing/having done/done区别 非谓语动词到底在什么情况下用doing,to do,done 非谓语to do,doing ,done的用法[要重点,不要太复杂的 请问 非谓语使用时 to have done 与 having been done 有什么区别