at weekend 与at the weekend这两个短语我都见到了,到底哪个是对的.有什么区别吗?

at the weekend造句 at the weekend同义词 on the weekend or at the weekend 如何区分at weekend 与 on weekend at weekends和at the weekend 区别 At weekend和at the weekend有区别吗?同上. on weekends与at the weekend意思相同吗 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和at the weekend和at weekend和at weekends有什么区别 at the weekends,at weekends,at the weekend,at weekend 怎么区别? 英语中的at the weekend与on the weekend有什么区别?快来帮我! 英语中at the weekend与at the weekends有什么区别? 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 at the weekend与for the weekend的区别是什么?原句:What are the johnsons going to do at the weekend?We're going to stay at my mother's for the weekend. at the weekend 和 over the weekend 有什么分别? at the weekend 和 on the weekend的区别 这里（at） the weekend,与（for） the weekend怎样用法?这里at the weekend,与for the weekend怎样用法?what are you going to do at the weekend?与we are going to stay at my mother's for the weekend.这里?