It's good to greet family members when you see them.
Timmy goes to visit his grandparents' house for the day, and they say hello to him.
Timmy wants to watch TV.
Timmy says hello to his grandparents and asks if he can watch their TV.
Timmy runs to his grandparents' TV without saying a word to them and watches a show.
Timmy's grandparents are proud of little Timmy's manners and give him a treat.
Timmy's grandparents think Timmy is a very impolite little boy for not even saying hello to them.