"I've been travling all around the east coast"是什么时态?是我已经游览了东部海滩还是我正在游览东部海滩?

I've been travling all around the east coast是什么时态?是我已经游览了东部海滩还是我正在游览东部海滩? 用once 可以用完成时么 还是必须过去时once i have been travling... I've been expecting I've been cryin Ive been to I've been filming. I've been to me I've been waiting for i've been referred to I've Been Waiting 歌词 I'Ve Been Here 歌词 i've been ...是什么时态? I’ve been to the 请问i've been down I`ve never been to me中文 I've never been to me I've Been Waiting For You 歌词 I've been always waiting for