If you look at the word Christmas, you can see the word Christ in it. On Christmas, people celebrate (庆祝) the birthday of Jesus Christ.
Of course (当然) not everyone in America thinks Christ a great man, but Christmas is a holiday for all the people. It’s on December 25. Shops and schools are not open. Almost (几乎) every family has a Christmas tree in the house. People make their Christmas trees very beautiful. They put many colored bulbs on the trees. The bulbs make the trees more beautiful at night. They also put some dolls, balls and small animals on the trees. On Christmas day almost everyone gives gifts to others and also gets gifts from others.