例子 I have been on a diet for better part of my lifehave been　如果是过去完成时的被动语态后面应该是done,为什么会出现介词呢?还原应该是怎么样?或者这根本不是被动词态.请指导!

I have been a person . have been tired ,want to have a shoulder to depend on what i. 例子 I have been on a diet for better part of my lifehave been　如果是过去完成时的被动语态后面应该是done,为什么会出现介词呢?还原应该是怎么样?或者这根本不是被动词态.请指导! these economies have been on a tear __________ my return,I heard that my parents ___________ at the supermarket．A.At；went B.On；have been C.On；had been D.During；had been 求一篇关于 a journey i have been on 的英语作文 I think I would have been silent on翻译rt I had been sitting 和 I have been sitting 的区别多举些例子,并翻译 英语翻译i have been really hard on a secrst project,which is something i have been known to do from time to time ---I didn’t see you the whole summer holiday.---I ____ Yunnan on August 2nd.I ___ there for two weeks.A.went to,have been B.have gone,have goneC.went to,was D.have gone,have been i have been here many a I have been looking for a man. I have always been a person I have always been a maverick是什么意思 have been on have been on i have a crush on Have you been working on the project?__.I will have a rest in ten minutes.A:No,I haven't B:Yes,I do