It is certainly a past participle, but you can't use it that way. You can, however, say "he is injured" and "injured" is also a past participle. So what's the difference? Why can you say one but not the other? The difference is that it is possible to "injure a man" but you cannot "die a man". "Die" is an intransitive verb. To use a past participle as an adjective modifying a noun, it must make sense for the underlying verb to act on the noun. Thus you can say "There is a buried treasure" or "A treasure is buried" because it makes sense to "bury a treasure". You cannot say "The boy is swum" (past participle of "swim") because it is not possible to "swim a boy". However you can say "The mile is swum" because it is possible to swim a mile. Likewise, you can say "the swum mile" but you cannot say "the swum boy".

The word "died" is primarily used as a verb to indicate the action of death. However, it is not commonly used as an adjective or participle in modern English. Instead, you would typically use the adjective "dead" or the past participle "deceased" to describe someone who has died. Correct examples: He died yesterday. She is dead. The deceased person will be remembered fondly. Incorrect example: He is died. (This is not grammatically correct in standard English.) If you want to express a continuous state resulting from death, you would use "dead" rather than the past tense "died." So, you could say, "He is dead," to convey that someone is currently in a state of being deceased.

Hi Yarina!!

You can't use it in that way. He died or he has died - verb He is dead - adjective