Situation
Someone offers you more food, but you are genuinely full.
Say no appreciatively while keeping the warmth of the offer.
Natural American English
“I’m so full, but thank you—it was delicious.”
自然中文 · Natural Mandarin
“我真的吃不下了，不过真的很好吃，谢谢。”
Wǒ zhēn de chī bu xià le, búguò zhēn de hěn hǎochī, xièxie.
Literal translation
I truly cannot eat any more, but it really is delicious, thank you.
Tone
Warm, grateful, and firm enough.
Culture
Offering more food can be an expression of care. A warm no respects both your own limit and the person offering.
What lands
The appreciation is the important part. It separates declining more food from rejecting the meal or the host.
Try it
Your aunt offers you another slice of cake, but you cannot eat another bite. What could you say?
Reveal a natural response
“I’m so full, but thank you—it was delicious.”
Common mistake: A bare “No, I’m full” can sound final. Add thanks or a compliment when the context calls for it.