weekday和weekdays的区别?

weekday和weekdays的区别? Weekday weekend weekdays 的区别.worried 和worry的区别,他们各自的短语的区别. on weekdays,at weekdays和on weekday,分别是什么意思?它们的区别分别是什么on weekdays，at weekends和on weekday分别是什么意思？它们的区别分别是什么，上面的错了 weekdays和weekday的区别我要正确的说法.不能有错.到底是工作日还是周日?为什么有不同的解释 on weekday 和on weekdays 一样么?还有on weekend 和on weekends 一样么 是on weekdays还是on weekday? during the weekday还是during the weekdays at weekdays和on weekdays有什么区别?该怎样用? weekend和weekday有什么区别 weekdays和weekend有什么区别 weekday和workday的区别- -中文意思好像一样的样子- - weekday与weekdaysm,weekend与weekends使用和意义上的区别如题 谢谢! week、weekends、weekend、weekdays的区别是什么? during the ____.空上应选填weekday 还是weekdays? 英语老师来啊on weekends on the weekend at weekends at the weekend in weekends in the weekendin weekdays in the weekday in weekday on weekdays on the weekday on weekday at weekendsat weekday at weekdays weekday workday weekend 区别 weekday 和weekend 有什么区别如题 my friend jack works hard in a factory on weekdays.为什么用weekdays而不用weekday