请问一下have been to和have been in和have been at有什么区别?

请问一下have been to和have been in和have been at有什么区别? 请问they have been able to do的时态是什么?been able to 和 be able to的区别是什么? continue to have dreams,continue to hav 中文意思? Have been in和have been to的区别? have been in和 have been to区别 have been to和have been in的区别 have been to sp和 have been sp和 have been sth?特别是have been sp是表示曾经到过什么地方,还是表示一种状态?请知道的人告诉一下! have been to和had been to的区别 have been to 和 have been in 和have been on有什么区别 have been in have been to have gone to用法have been in和 have been to和 have gone to的用法 英语问题：请问. have/has been to 和have/has gone to有什么区别?英语问题：请问. have/has been to 和have/has gone to有什么区别?初三的 请问一下I have been to shanghaiI have been to shanghai还原成一般现在时怎么还?如果been对应是的am I am to shanghai又错在哪?谁知道的,麻烦告诉一声,谢谢? 请问have been 和has been有什么区别 have been to和have gone to和have been in的区别 have been done 和 to be done have been to,has been to ,have been in ,与have gone to,has gone to 的区别和用法. have been to 和have gone to 有什么区别 英语HAVE BEEN TO 和HAVE GONE TO 的用法