mondays是“每逢周一”的的意思，强调一个时间的循环。monday只是强调具体的星期一，一个时间点。例如：I go to the park on Mondays。我星期一都去那个公园;I go to the park every Monday;我每一个星期一都去那个公园。
Monday用法例句1、Wendy popped in for a quick bite to eat on Monday night.
温迪周一晚上过来匆匆吃了点儿饭。
2、The orchestra gave its first performance on Whit Monday.
乐团在周一的圣灵降临节举行了首场演出。
3、He expressed the hope that on Monday elementary schools would be reopened.
他表示希望各小学星期一能复课。
Mondays用法例句I work Mondays to Fridays. 我每周星期一到星期五工作
I usually go swimming on mondays, but I've decided to give it a miss this week. 我通常逢星期一去游泳，但我决定本星期不去了。
I'm usually here on Mondays and Fridays. 我通常周一和周五在这儿。
