AprilFool'sDay是什么节日,在几月几日?

April Fool's Day 也可以写作 April Fools' Day，两种表达方式都是正确的。不过，通常使用单数形式来表示这个集体的概念，没有必要使用复数形式。

April Fool's Day 单数所以用's 既然April Fools'Day字典上也有，那就两个都对

1. April Fool's Day, also known as All Fools' Day, is celebrated annually on April 1st.

On April Fool's Day, people engage in pranks and practical jokes to amuse themselves at the expense of others.

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