to have done , having done 选哪个?为什么?

to have done , having done 选哪个?为什么? done,tobe done,to have been done,to have done,having done,ha 非谓语动词用法to have done/having done/to have been done/having bee now i regret having done改成to have done不行吗?为什么? to have done 与having done 有什么不同 to have been done 和having been done 非谓语having done与to have done having done 和 to have done的区别 having done 和to have done的区别? having done和to have done区别?我们老师说regret to have done,forget h to have done,to be done,to have been done,having done在用法上有什么 have done/to be done