be的过去分词，有；在；是；到达；拜访
Our partnership dates back to (ie We have been partners since) 1960. 我们从1960年就合伙了。
A 1000 reward has been offered for the return of the stolen painting. 悬赏1000英镑寻找失窃的画。
`Have you been waiting long?' `Yes, I've been waiting (for) twenty minutes.' ｀你等了很久了吗?＇｀是啊，等了20分钟了.
I had been a footman for 20 years. 我曾做过20年的听差。
I have been instructed by my agent that you still owe me 100 pounds. 我的代理人通知我，你还欠我100磅。
I've never been seriously ill. 我从未得过大病。
参见：be
been常有“来”或“去”的意思。 I haven't been to the park for months.我已经有数个月没有去那个公园了。
been指得是一次“完整”的来或去。 The postman's already been.邮递员已经来过了，走了。 Jane's come, so we can start work.简来了，我们可以开始工作了。第一句邮递员已经完成了任务，来过又走了，是完整的，而第儿句，简来了，还没有走，不完整，所以第二句中不可用been。
