你为什么对你的母亲这么没礼貌？

Why are you so rude to your mother?

《牛津词典》

“没邀请你你就坐下了，真是太不礼貌了。”三月兔说。

"It wasn't very civil of you to sit down without being invited," said the March Hare.

youdao

别说你认为别人想听的话，因为你不想没礼貌或伤害别人。

Don't say what you think the other person wants to hear because you don't want to be impolite or hurt their feelings.

youdao

It's a really disgusting habit and you have to stop doing this. It's so impolite.

这真是个令人作呕的习惯。你一定要改掉。这样太没礼貌了。

have to 实战 - SpeakingMax英语口语达人