It happened in a morning that I was walking in the street .I ate up a banana and threw their peel on the corner of the road. Short after that I heard a scream behind .I looked back to see what was happened .A little girl about 8 years old fell down and the banana peel was exactly under her left shoes . She stood up without cry .Then she picked up the banana peel and ran toward the dustbin .On that moment ,I realized my fault , and went to apologize her for that ,but my vanity (虚荣心)prevented me . The little girl had taught me a good lesson by her action.. And now, after I do everything, I’ll think carefully whether it’s right or wrong. I’ll do my best to be in good habits and qualities.