1. This meat isn't fresh. 这肉不新鲜啊。

　　2. This meat is too fatty/tough. 这肉太肥了/老了。

　　3. This fish is overcooked. 这鱼烧过头了。

　　4. This dish doesn't agree with me. 这道菜不合我胃口。

　　5. Umm, yummy! 嗯~真好吃!

　　6. It tastes really good. 这个吃起来真不错!