1、 not bad ：fairly good, or better than you expected 总体表示不错 ，比预想的结果好些。

　　How do you feel this morning?

　　Not bad, thanks.

　　今天上午你感觉怎么样?还不赖。谢谢。

　　2、 It's alright ：Alright is defined as a shortened form of the phrase “all right” and it means okay or satisfactory. 重音放在"alright"上面，表示你保持中立的态度，不好也不坏。

　　example

　　Have you tried my dish?

　　Yeah, it's alright.

　　你有尝我做的菜吗?恩恩，还可以!

　　老师在这里补充另外一个非常British的表达方式：Okay, I suppose. 表示「我觉得还可以吧」「一般般吧」

　　3、good, all things considering/considered! ：Someone might say that something is good all things considered to mean it was generally good although the situation was not perfect. 如果你的朋友说good, all things considering，那就说明某事现状还不错，即使不是近于完美的状态。

　　example

　　How was the party?

　　I think the party was good, all things considered.

　　昨天的聚会怎么样呢?还不错呢!

　　老师在这里补充一下：这个表达方式的使用方法根据时态而定，例举时态为过去时，故用considered。all things considering/considered说法都是正确的，使用时根据时态不同而变换词性。