You use him to refer to a man, boy, or male animal.
双语例句
例：
John's aunt died suddenly and left him a surprisingly large sum.
约翰的姑妈突然去世,给他留下一笔令人意想不到的巨款。
例：
Is Sam there? Let me talk to him.
萨姆在吗？让我和他谈谈。
2.?他（书面英语中泛指人）
In written English, him is sometimes used to refer to a person without saying whether that person is a man or a woman. Some people dislike this use and prefer to use 'him or her' or 'them'.
双语例句
例：
If the child encounters 'hear', we should show him that this is the base word in 'hearing' and 'hears'.