have been done 语法呢

have been done 语法呢 have been done 是什么时态?那have done呢? must have been done must have done will be done和will have done是什么情况could have been呢 you have no idea what I've been through.语法我想问的是：1`habe been through是个啥结构?2`through在这里应该是什么词性呢?介词还是副词?3`have been 不是一般跟done吗? pretend to be done是什么时态?pretend to be doing pretend to have done pretend to have been done呢? have been done 和 to be done How many times do you have been done?这句话的语法对吗 has been doing have been done区别 have been 形容词 属于什么语法现象呢? being done,have been done和having done怎么分辨 HAVING BEEN DONE和HAVE BEEN DONE有什么区别? could have been done ,could have have done 与have been done的区别 have done和have been done 的区别, should have done与should have been done的区别? since前用have done 还是have been done have done和have been done的用法是什么?