四月一日的英语为：April 1st.
四月一日是愚人节。
例句如下：
1、会议四月一日开幕了。
The meeting opened on April lst.
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2、四月一日是一个特殊的日子，在那一天，你可以恶作剧而不被惩罚。
The first of April is a special day, on which practical jokes may be played without punishment.
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3、英格兰和苏格兰的居民将四月一日这天作为愚弄人的日子。
People in britain an Scotland recognize April1st as a day of fooling.
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4、汤姆的生日是四月一日。
Tom's birthday is_on_the first of April.
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5
有一次的四月一日，一辆乡村公共汽车正行进在路上，突然它放慢了速度，最后停了下来。
On April first, a country bus was going along a road. Then it slowed down and stopped.
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