He has been now dead for many years这个句子中为什么要加now?now在这里有含义吗?

He has been now dead for many years这个句子中为什么要加now?now在这里有含义吗? 1.gran had been dead for six years now.解释一下句子中“had been dead He has been a_____ for 5 years and now he's been used to the 为什么是he has been dead for 10 years而不是he has dead for 10 years as a result,many rivers and lakes are now dead.这里为什么将now放dea He's been in Londen for many years and now he__the weahter t Tom has been in China for 3 years ,now he is very comfortabl 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? He has been dead for three years My grandfather has been dead for many years.这句话为什么用has been的 lisa's mother has been ill for two years.这个句子中为什么有been? He is at home now,maybe.这个句子中at home now是状语吗