Four little ducks swim in the river. Three of them play happily together, but one duck is alone.No one wants to play with him. They call him the "ugly duckling".
The ugly duckling is so sad. He looks at the swans（天鹅）in the sky and wants to be as beautiful as swans.
The weather is getting colder and colder,and the ugly duckling leaves（离开） home.
It's spring again. The weather is getting warmer and warmer, and he grows bigger and older.
One day, he meets two swans. They say, "Oh, you're so nice." The ugly duckling knows that he is a beautiful swan. He is happier than before.
