1) I&`&m full.
* full 饱的
A: Would you like more?
还想再吃点吗?
B: No thanks, I&`&m full.
不要了,我已经吃饱了,谢谢。
2) I&`&ve had plenty / enough / too much already.
Host: Would you like some more?
Guest: Oh, no, I&`&ve had plenty. This was all wonderful, thank you.
或者说 Oh no, I&`&ve had too much already. Thank you, it was delicious.
3) I&`&m stuffed.
* stuffed 塞满的
Host: Do you care for seconds?
主人: 要不再来点?
Guest: Oh, no, don&`&t tempt me! I&`&m already stuffed.
客人: 别诱惑我了,我已经吃撑了。