mayn't
abbr. 可能不（may not）
例句
Mayn't I sing them just one LITTLE song?
我可以给他们唱一首小曲吗？
He mayn't come back till autumn or winter.
他可能要到秋天或冬天才回来。
He said: "Mayn't I go and play now, aunt?"
他说：“姨妈，我现在可以去玩了吗？”
