they have gone shopping是不是去了还没回来,如果回来了是否得改成they have been to

they have gone shopping是不是去了还没回来,如果回来了是否得改成they have been to They have gone to ()()()他们去买东西了 He has been there for six months在这里表示去了还没回来,为什么不用has gone? have been to+地名是指去了某地以回来了吗?have been in+地名是指去了某地还未回来吗? 为什么she has been to school表示“她上学去了“,不是have been to 表示已经回来了吗? Where has he been.他去哪里了（回来了） Where has he gone.他去哪里了（没回来呢） have been+地名是指去了某地以回来了吗?have been in+地名是指去了某地还未回来吗? 去了还没回来 和 去了已经回来了 英语怎么表示? 英语翻译是说他去了美国还没回来还是去过但回来了? They have already been to Sandy Bay改成疑问句 They ____(leave) the shopping centre already.They have been They have gone to Xi'an,___(have) they?