"I had a beautiful dream last night" 是表达“昨晚我做了一个美梦”的常用说法。
来源：这是一个常见的说法，无特定来源。
例句：
I had a beautiful dream last night about being on a tropical island. (我昨晚做了一个关于在热带岛屿上的美梦)
I woke up feepng refreshed and energized after having a beautiful dream last night. (昨晚做了一个美梦后，我醒来感到精神饱满)