这个短语应该是have been (in) ,there 是地点副词前不加介词
have been in表示“在某地呆了多少时间”,常与时间段状语连用.
和你说的例句意思一样
eg.I have been in Shanghai for three years.我到上海已有三年了.
He has been in London for half a month.他来伦敦已有半个月了.麻烦了 还有个问题He has never been abroad before这句话中abroad也是一个副词 这里been后省去的是 to 吗?因为没有看见表示一段时间的时间状语。嗯 是的