have been to somewhere是（已经）去过某地的意思
have been done是被动语态这里的been作be的过去分词时可以换成gone吗？如果换了，意思有何改变？go这个词不做被动用，所以have/has gone就可以了。例如电池没电了，就可以说the battery has gone.have been to sw.和have gone to sw.有什么区别