个案:乖巧孩子变成叛逆少年张跃今年15岁,是一名初二学生。在母亲刘小华眼中,14岁之前,张跃是个乖巧、听话的孩子,也是老师眼里的好学生;14岁之后,他变成了时时、处处、事事和父母、老师作对的叛逆少年。 Case: Well-behaved children into rebellious teenager Zhang Yue 15 years old this year, is a sophomore. In the eyes of his mother Liu Xiaohua, before the age of 14, Zhang Yue was a well-behaved, obedient child and a good student in the eyes of the teacher. After 14, he became a rebellious teenager who always and everywhere confessed his parents and teachers.