前边加冠词the，例如：
1、Thus we can see that， on the first day， the pipit flew 20 kilometers.由此可见，第一天，这只鹨飞行了20公里。
2、The first day of term， which seemed so far away at the start of the summer holidays， is looming.暑假刚开始时，开学显得那么遥远，现在却近在眼前。
3、Let seven weeks be numbered from the first day when the grain is cut.你要计算七七日，从你开镰收割禾稼时算起，共计七七日。
