为什么是has been dead不是has dead

为什么是has been dead不是has dead 为什么是he has been dead for 10 years而不是he has dead for 10 years Her grandmother has been dead for two years 为什么是 His father has been dead for two years为什么用been?been不是表被动吗? died和has been dead The hero has been dead for two years.为什么用dead ?而不用died ? has been dead 与have dead 的区别! He's dead 和he has been dead的关系 He has been dead for three years Love has been dead什么意思 jack has been dead for three years My grandfather has been dead for many years.这句话为什么用has been的