疑惑中.怎么英语老师会说：on April the first和in May the twentieth 两个不一样的介

on April first 和 on April the first 那个对 Her birthday is on May ()A.the twentieth B.twentith april fools' day ____ on the first day of april. on the morning of April 21和in the morning on April 21 my mother's birthday is on May the twentieth 这是什么用法 on May t On April 12th,1961,Yuri Gagarin became the first man in spac On april 12th ,1961,Yuri gagarin became the first man in spa the first of April的中文是什么意思 The air fare in April is lower than in May.用英语怎么翻译? the basketball game is on april first变疑问句 "on the first very day of school"" in the right day"这两个短语中ri May Day is--------------the first of May A.on B.in C.at