I regret to say (that) I have a previous engagement that evening. However, thank you FOR thinking of me.

很遗憾，那天晚上我另有约会。不过，我还是感谢您想到了我。

youdao

It's very nice of you to ask, but I have a previous engagement that evening, so I'm afraid I won't is able to come.

你的邀宴太棒了，但那个晚上下班事先已有约会，所以我恐怕不能来参加。

youdao

It's very nice of you to ask, but I have a previous engagement that evening, so I'm afraid I won't is able to come.

你的邀宴太棒了，但那个晚上下班事先已有约会，所以我恐怕不能来参加。

youdao