It can be seen from the teacher's dialogue that his moral development of Yvonne is related to the innate morality and psychoanalytic perspective.First, innate morality. The teacher believes that he can know right and wrong, proving that people are born with an altruistic nature. Because Yvonne did not ask the teacher, he helped the teacher clean the table. This behavior will not benefit him, but will be beneficial to others. Reflects that Yvonne will actively help others without being taught. Therefore, the teacher believes that these behaviors are related to innate morality.Secondly, the psychoanalytic perspective. Yvonne is in the Electra complex, which will internalize the mother's behavior in life. And Yvonne's mother is a helpful mother who set a good example for Yvonne. From this, he will observe his mother's behavior and practice it in daily life. Therefore, in school, he would actively invite Tong Qi to play together and take the initiative to help others.The above is the teacher's views on the moral development of Yvonne.