你好！"Is he okay?" 是 "他好吗" 的英文翻译。这个短语来源于人们问候和关心他人的健康状况。

例句：

1. I saw him fall and hit his head. Is he okay?

我看到他摔倒撞到了头。他好吗？

2. She hasn't been answering my calls. Is she okay?

她一直没有接我的电话。她好吗？

3. He's been acting strange lately. Is he okay?

最近他行为怪异。他好吗？

在这些例句中，"Is he okay?" 的意思是询问对方的健康状况，表示关心。