吃饭不大声说话英文怎么说

"Don't speak with your mouth full" 是一个常见的表达方式，意思是在吃饭时不要大声说话。这个表达方式源于礼仪习惯，因为吃饭时嘴里有食物，容易发出不雅的声音或溅出食物，所以在吃饭时应该保持安静。

例句：

Please don't speak with your mouth full. 请不要在吃饭时大声说话。
It's rude to speak with your mouth full. 在吃饭时大声说话是不礼貌的。
Keep your mouth closed while you're eating. 在吃饭时保持嘴巴合闭。