We invite your attention to your behavior请您对您的行为给予注意

今天的几个句子是有关抱怨的：1.We are sorry to inform you that... 我们不得不遗憾地通知您…… 2.We very much regret to have to remind you of... 我们不得不很遗憾地提醒您…… 3.We wish to point out that... 我们想指出……