die，动词，一般指因生病、负伤等原因而死，例如：His grandfather died two years ago，他爷爷去世两年了。dead，形容词，可以在句中作表语和定语，例如：my sister is dead，我姐去世了。death，名词，只能在句中作主语或宾语，例如：his death made me sad，他的死让我伤心。
（1）die是不及物动词,一般指因生病,负伤等原因而死.如：
He was born in 1847 and died in
1913.他生于1847年,死于1913年.
注意：die表示瞬间动作,不能和表示一段时间的状语连用.试译：
他爷爷去世两年了.
误：His grandfather has died for two years.
正：His grandfather has been dead for two years.
正：His grandfather died two years ago.
（2）die用于进行时态作“生命垂危”解.如：
Please come quickly; your friend is
dying.请快来,你的朋友奄奄一息了.
（3）dead是形容词,表示状态,可以在句中作表语和定语.如：
He is dead,but his name will live for ever in our
hearts.他虽然死了,但他的名字将永 远活在我们心中.
It doesn’t look like a dead fox.看来它不像一只死狐狸.
（4）death是抽象名词,只能在句中作主语或宾语.如：
His death is weightier than Mount Tai.他的死比泰山还要重.
I heard of his death when I got to his
house.我到他家时得知他已经去世了.