问题描述： people have been suffering a lot 为毛要加been这不是进行时的被动语态吗 1个回答 分类：综合 2014-10-08 问题解答： 我来补答 have been doing 现在完成进行时表示从过去某时开始一直持续到现在的动作,并且还将持续下去people have been suffering a lot .人们遭受很多苦难这不是进行时的被动语态!这是现在完成进行时 have been doing 展开全文阅读
