on that day和that day的区别

　　例句：

　　We eat Zongzi on that day.

　　我们会在那一天吃粽子。

　　On that day, the moon is round. So families want to get together and eat mooncakes.

　　在那一天，月亮是圆的，所以家人都想聚在一起吃月饼。

　　That day, everything gelled.

　　那天，一切都很顺利。

　　He was not in a good mood that day.

　　他那天心情不好。

　　The events of that day were just a blur.

　　那天发生的事只剩一片模糊的记忆。