Eat up! 吃啊! Eat some more. 再多吃一点! Eat as much as you can. 尽量吃. Fill up! 尽量吃! Keep eating. 多吃一点. You can eat more than that. 你可以再多吃一点. Don't be polite. 不要客气. You can't be full! 你不可能吃饱了! You can do better than that! 你可以再多吃一点.