have been doing have p.p.区别在哪?

have been doing sth have been doing ,have done和have doing区别 have been doing 神马意思? what you have been doing has been doing have been done区别 have been doing 为什么还有 have been deadj have been do和have been doing的不同 i has been doing 还是i have been doing 存在have been doing、have being doing、和have be doing吗? have been doing,had been doing,will have been down是什么 what have they been doing 是什么时态 have been doing sth是什么时态? have been doing 该怎么用 What have you been doing lately? should have been doing表示什么情况? We have been happy to continue doing have sb done和have been doing有么? have been doing have p.p.区别在哪?