"What a shame" 或 "How unfortunate" 是表达"多么遗憾"的常用短语。

来源:
这两个短语都是用来表达对某件事的惋惜或遗憾的情感。它们都来源于英语中的感叹词 "what" 和 "how"，这些词常用来表达感叹或惊讶。

例句:

"What a shame that you couldn't come to the party. We missed you." (真遗憾你不能来参加聚会。我们很想念你。)
"How unfortunate that the weather is so bad today. I was really looking forward to going on a hike." (真不幸今天天气这么糟糕。我真的很期待去远足。)