Being a fine day we went out for a walk.不对的话错在哪里?

问题补充：

Being a fine day,we went out for a walk.不对的话错在哪里?

答案：

不对,英语中状语的逻辑主语要和句子主语一致,在本句中,状语being a fine day的逻辑主语是天气,而句子的主语是we我们,最简单的改动是把状语改成独立主格结构：

It being a fine day,we went out for a walk.