There are social rules that society expects us to follow when we talk to people.
We use language for different reasons, changing our language for the listener or situation, and we follow rules for conversations and storytelling. For example, not interrupting when someone else is telling a story, and looking at the person who is talking to you.
If your child struggles with understanding social rules when talking or playing, they may feel isolated or have no friends. It may also be helpful to seek professional advice to ascertain why the child is experiencing these social difficulties.