You use him to refer to a man, boy, or male animal. John's aunt died suddenly and left him a surprisingly large sum Is Sam there? Let me talk to him My brother had a lovely dog. I looked after him for about a week
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'. If the child sees the word `hear', we should show him that this is the base word in `hearing' and `hears'. Her (or His) Imperial Majesty