终极回答驾到.
请看上海译文出版社2002版,已故英语泰斗、复旦大学葛传槼教授编著《英语惯用法词典》第68页相关的解释：
I asked him a question比I asked a question of him普通.I have a question to as (of) you里的of可有可无.
结论：想表达“我能问你一个问题吗”,Can I ask a question for/to you都不对,只能说Can I ask you a question或Can I ask a question of you.