being+n.和having been+n./adj.当然可以用作状语。例如：

Being a student, you should work hard.因为你是学生，所以你应该努力学习。

Having been a project manager, I know this approach sounds a little scary.我曾经做过项目经理，我知道这种方法听起来有点吓人。

Having been busy for a week, I got some free time to watch an English movie again tonight.在忙了一周之后，今天晚上我终于有了看一部英文电影的闲暇时间了。