以下是我的一些经验,希望能用得上--
May I go out for a while please?
或者
Could you please advise me if I could go out for a while?
May I be excused(for a while)?
这个符合外国人的语言习惯
括号里的可要可不要
CAN I go out for a while?
Excuse me,may I leave for a second?
excuse me may i leave for a while?