愚人节英语是：Fools' Day下面是用英文介绍 愚人节：April Fools' Day is a day to play jokes on others, No one knows how this holiday began but people think it first started in France. In the 16 th century, people celebrated New Year's Day from March 25 to April 1. In the mid—1560s King Charles IX changed it from March 25 to January 1. But some people still celebrated in on April 1, so others ca..