on Sunday是指"在某个星期日",而on Sundays是指"在每个星期天 "例如:
1. We visited Liu Tao's grandparents on Sunday.(牛津小学英语 6A Page 42)
2. They don't work on Saturdays and Sundays. 3. They like swimming on Sunday.(牛津小学英语 5A Page 35)
原帖由 韩幼稼 于 2006-11-28 16:33 发表
on Sunday是指"在某个星期日",而on Sundays是指"在每个星期天 "例如:
1. We visited Liu Tao's grandparents on Sunday.(牛津小学英语 6A Page 42)
2. They don't work on Saturdays and Sundays. 3. ...