为什么是in the early morning

为什么是in the early morning in the early morning? Early in the morning early in the morning 等于early morning early in the morning是对的 哪early in the morning of 1st 为什么是in the early morning却是on a dark night? 为什么是in the early morning,有修饰的早中晚不是用on吗 in the early morning 还是 on the early morning early morning和early in the morning什么区别 找一首英文歌,第一句是Early in the morning dose she ( )up in the morning early in the early morning 是几点呀,具体点