现在完成进行时是没有被动语态的,如果有现在完成进行时的主动结构的句子变为被动结构,可以用现在完成时。例:We have been discussing the problem for 2 days.变为:The problem has been discussed for 2 days.
现在完成进行时是没有被动语态的,如果有现在完成进行时的主动结构的句子变为被动结构,可以用现在完成时。例:We have been discussing the problem for 2 days.变为:The problem has been discussed for 2 days.