As I really would like to attend my sister's wedding next Monday,I will appreciate it very much if you could be so kind and grant me one day off on that day.
英语翻译由于下周一参加姐姐的婚礼,因此打算在下周一请假一天.（请说的稍微委婉一点,适用下级向上级请假）
As I really would like to attend my sister's wedding next Monday,I will appreciate it very much if you could be so kind and grant me one day off on that day.