现在分词完成式
问题描述：
现在分词完成式
1.we are happy to have been working with you.
2.we are happy to having been work with you.为什么
答
1,have been doing现在完成进行时,表示动作从过去某时开始到现在这一段时间里还在延续,它侧重动作的未完结和进行They have been talking all the night.他们谈了一宿的话.（这一宿,这一动作都在进行着）we are happy...