at the weekend 和at weekends有什么区别?有没有区别？如不同，各自用法又是什么？

at weekends和at the weekend 区别 At weekend和at the weekend有区别吗?同上. at the weekends和at the weekend和at weekend和at weekends有什么区别 at the weekend 和 over the weekend 有什么分别? at the weekend 和 on the weekend的区别 at the weekend造句 at the weekend同义词 on the weekend和at weekend用法一样吗? at weekend,on weekend,at the weekend ,on the weekend和on weekends的区别?尽量详细些... on the weekend or at the weekend at weekend,on weekend,at the weekend ,on the weekend,on the weekends,at weekend和on weekends区别?at weekend,on weekend,at the weekend ,on the weekend,on the weekends ,at the weekends,at weekends和on weekends的区别? 一下短语有什么用法区别?At weekend.On weekend.At the weekend.On the weekend. 我们说 on weekend ,at weekend,还是in the weekend at the weekends,at weekends,at the weekend,at weekend 怎么区别? for the weekend和at the weekend有啥区别呢, on与at的区别What do you usually do on the weekend?和What do you usually do at the weekend?ON与AT的区别 What do you do at the weekend? What do you ____do at the weekend?