一天三次用英文怎么说短语

"Three times a day" 是表示一天三次的常用短语。"Three times" 是 "三次" 的意思，而 "a day" 则表示 "一天"。这个短语是由 "三次" 和 "一天" 组合而成的。

例句:

I need to take my medicine three times a day. (我需要一天服三次药。)
She exercises three times a day to stay in shape. (她每天锻炼三次以保持体形。)
He studies Engpsh three times a day to improve his skills. (他每天学习三次英语来提高他的能力。)