从前有一个男人用英语怎么说

"Once upon a time" 是一个常用的开头词语，用来引入一个故事或传说。这个短语来源于中世纪欧洲民间故事的开头，表示故事发生在很久很久以前。

例句：

Once upon a time, there was a young prince who lived in a grand castle. (从前有一个年轻的王子住在一座宏伟的城堡里)
Once upon a time, there was a magical kingdom filled with talking animals and enchanted forests. (从前有一个有魔法的王国，里面有能说话的动物和被魔法附近的森林)

另外，还有另一种说法，"long long ago" 意思也是说这件事发生在很久以前。

例句：

Long long ago, there was a kind and wise king who ruled over the land with fairness and justice. (很久以前，有一个善良且明智的国王统治着这片土地，以公正和正义为准则)
Long long ago, there was a great war between two powerful empires that lasted for many years. (很久以前，有一场两个强大帝国之间的伟大战争，持续了许多年)