Didn't your parents teach you manners?
He has impeccable manners, which means you can never be sure what he actually thinks!
他是一个极有礼貌的人 ﹣ 也就是说，他内心的想法永远没有人能看得穿！
He has no manners at all.
He is careful about his manners.
His manners are not those of a gentleman.
I don't like her manner.
I have trouble putting up with his rude manner.
She has no manners.
She has very good manners.
There is nothing worse than doing something in a half-hearted manner.
1. appearance: look, air, aspect, demeanour, mien, deportment, carriage
2. method: custom, fashion, mode, style, way, form, habit
3. class: type, kind, sort
4. character: nature, guise