“一再向某人要求”可以用以下几种英语表达方式：
1、 keep asking someone for something
这个表达强调持续、反复地提出请求。例如：He keeps asking his parents for a new car.（他一再向他的父母要求一辆新车。）
2、 repeatedly make requests to someone
“repeatedly” 突出动作的反复性，“make requests to someone” 清晰地表达了向某人提出请求的动作。例如：She repeatedly made requests to her boss for a promotion.（她一再向她的老板要求升职。）
3、 constantly request something from someone
“constantly” 同样表示持续不断地，“request something from someone” 是比较正式、书面的表达请求的短语。例如：The students constantly requested better facilities from the school administration.（学生们一再向学校管理层要求更好的设施 。）