等到有人发现时，他已经死在了血泊之中。

By the time someone came along he had drowned in his own blood.

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当他们找到他时，他已经死在山洞里了。

When they find him, he was dead in a cave.

youdao

当他们找到他时，他已经死在山洞里了。

When they find him, he had already died in the cave.

youdao

So, the barber is speaking about his son in such a way that he seems alive, but, in fact, he's dead. So here is one dead child playing baseball, or the memory of him playing baseball is alive with his father.

这个老理发师在用一种谈论,活人的口吻谈论他的儿子，但实际上他已经死了，那么，这里是一个打篮球的孩子的死，也许对他父亲而言，关于他打篮球的记忆将长存。

耶鲁公开课 - 1945年后的美国小说课程节选