hava been 和 had been的区别（什么时候用哪个?）

hava been 和 had been的区别（什么时候用哪个?） 英语问题什么时候用had been 什么时候用hava/has been 分不清楚分不清楚 Hava gone to 和 Have been to 的区别是什么? 什么时候用 hava/has been 除了被动语态和去过哪用been还有其他什么时候用been呀? 英语,has been和 had been had been had been doing 和had been done有什么差别 had been doing 和had been done有什么差别? had been和had been to的区别 Had been telling和 Had told 求问had gone和had been 1 block of memory hava not been deallocated什么意思 had been 和 has/have been的区别是什么? had been和have been有什么区别?请举例 初中英语语法has been和had been的区别 have been to和had been to的区别 had been 的意思和用法? what had been done had been done.