Once upon a time.
从前.
在不同的句子中有不同的译法^_^：
例句：
Once Upon A Time In America
美国往事
Once upon a time there lived a king.
从前有一位国王.
Once upon a time there was a king.
从前有个国王.
Once upon a time there lived a sweet little girl.
从前有个可爱的小姑娘.
Once upon a time there was a poor old fisherman.
从前有一位贫穷的老渔夫.
Once upon a time there lived a king with three sons.
从前有一个国王,他有3个儿子.
Once upon a time,there was a famous chieftain named fearless.
从前,有一个叫做天不怕的酋长.
Once upon a time there live a king who have three daughters.
从前有个国王,他有三个女儿.
Once upon a time,there lived a princess who was very beautiful.
从前,有一位非常美丽的公主.