英语翻译用once upon a time
问题描述：
英语翻译
用once upon a time
答
once upon a time, i am taking my maths lesson 希望帮到你
答
Once in the math class, I saw ...
答
有一次上数学课。There was once a maths lesson。
Once we had a maths lesson。
once一次，曾经。
希望对你有所帮助。学习进步、快乐！
答
once had a math class
答
应该是：
once upon a time ,we had math class.
once upon time ,从前,有一次,
所以句子的时态要用过去时
have math class上数学课