关于‘i have been coming to beijing for fourteen years’这句话的中文意思的疑问为什么是‘过去十四年间我经常来北京’?have been doing不是表示一直延续可能没有完成吗?还有就是为什么是‘过去十四

I have been selling I have been trying I have ever been I too have been I have been to. I have been I have been in. 英语翻译Creedence Clearwater Revival Have You Ever Seen The Rain Someone told me long ago,there's a calm before the storm.I know,and it's been comin' for some time.When it's over,so they say,it'll rain a sunny day.I know,shinin' down like water.I I have been there,have been 是have been in还是have been to的缩写? 关于时态的问题have beenhave been 和have had been有什么区别?原句是这样的：I've heard has been good.有have也有has 关于Have you been Have you ever been to Peking?yes,i have been there -----Athree timesBfor three timesCfor two months(我主要想问c为什么不对) i have always been there i have never been there I HAVE NEVER BEEN,能否说I never have been I have been so serious I have been so serious i keep on comin' back for more yo 这句啥意思啊特别是：comin I-have-been-at-home I have always been you I have been loving you