太遗憾了！(Tài yíhàn le!) What a Pity! (Beginner)
Example:
Nánhái: Míngtiān wǒ kěyǐ yuē nǐ hē kāfēi ma?
男孩： 明天 我 可以 约 你 喝 咖啡 吗？
Boy: May I take you out for coffee tomorrow?
女孩: 太 遗憾 了，我 已经 有 约 了。
Girl: What a pity! I have a prior engagement.
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