“当做神话”可以翻译为“treat as a myth” 或者 “regard as a myth” 。
例句：
People tend to treat the ancient legends as a myth without further exploration.（人们往往把那些古老传说当做神话，不再深入探究。）
Some scholars regard the traditional stories passed down as a myth, but they may contain hidden historical truths.（一些学者把流传下来的传统故事当做神话，但其中可能隐藏着历史真相 。 ）