对陌生人nice to meet you.
对家人dad,i'm coming
对教师good morning,teacher
对同学goodbye, xiaohong.多弄一点对教师happy teachers' day对爸爸happy fathers' day对妈妈happy mothers' day对同学happy children's day额，换个好点的问人时先说：excuse me.叫别人做事前先说：please别人帮了你，要及时说：thank you做错事时，要及时说：i'm sorry别人跟你说谢谢，你要说：it's my pleasure再来点就采纳