have no manners

例句：

1. 1. He has no manners at all;he talks to everyone as if they were his equals.
   他完全没有礼貌，对每个人都像对待平等的人一样说话。
2. 2.She is very unmannered, always forgetting her manners and speaking rudely.
   她非常没有教养，总是忘记自己的礼节和说话粗鲁。
3. 3. The teacher was very disappointed when she found that the students had no manners in class.
   当老师发现学生们在课堂上没有礼貌时，她感到非常失望。