what a shame和what a mess的区别

what a shame是真丢脸的意思，而what a mess则是乱七八糟的意思，区别可以从以下例子看出：

I am shock to see what they have done, what a mess they left. What a shame as their friends. 看到他们做了什么，他们留下了多么混乱的一团糟，我感到震惊。 作为他们的朋友真是太丢脸了。