英语 关于have与have been句子1 doctor have been instrumental in improving living standards in western society.句子2 sicial factors have interplayed with one another over the past hundred years and made the middle east what it is today.请问

英语:have been 关于have/ has/ been to sp/的句子关于have/ has/ been to sp/的句子3句 have been与have gone的区别 英语中have been；has been是什么? where you have been与where have you been区别 where you have been与where have you been区别 have never been与never have been的区别 have been open 与have been opened的区别 I have lived here.与I have been in there.有什么区别?第二句中的been表示什么? 英语时态用法have +动词过去式 与have been +动名词的区别 英语中的 have been 比如说 there have been fewer accidents recently.中的have been have gone to 与 have been to ,have gone ,have been的区别是什么 have been have been have been have been have been to 与have been 有什么不同 是否have been to 加名词 have been 加副词? where have you been I have been to Australian 这个句where have you beenI have been to Australian