动词时态问题,动词是die,为什么句中用have died,不是have been dead

动词时态问题,动词是die,为什么句中用have died,不是have been dead dead die died have been dead 有啥区 have died have been dead 为什么现在完成进行时是have/has+been+动词进行时态 但是在“I have been how long have you been studing english?为什么been后面是动词ing ,不是应该 have been dead和have been died哪个对 怎样区分have been died 和have dead?为什么前者不对? 什么时候用have died 什么时候用have been dead He has been dead for many years.为什么用dead?此处不是该用动词吗?此句动词是什么呀? have been 加动词的过去分词是什么时态 情态动词后面加动词原形,为什么还可以是 he must have been away , had done 是过去完成时,have done是现在完成时,那have been和had been呢?be不是动词呀