我的儿子已经快上初中了,可是非常不懂礼貌。家里来了客人,他视而不见,旁若无人,径自干自己的事;吃饭时客人还未动筷,他就大吃起来,完全不顾别人;和我们说话时,“哎”、“喂”成了经常的称呼。教育他他也不听,还说:“这有什么了不起的。”为什么会这样呢?我该怎么办? My son is almost in junior high school, but very polite. When he came to the house, he turned a blind eye to him and walked his own way. When the guests did not move his chopsticks at meal time, he ate it without any regard to others. When he talked with us, hey and hello became frequent call. He did not listen to him, and said, “What’s remarkable about this.” Why is this? What should I do?