题目内容：

区别at the weekends,on the weekend,at weekends,on weekends
at the weekends,on the weekend,at weekends,on weekends
都有些什么区别?各自的意思是什么?

优质解答

到这些周末的时候,过这些周末时,到周末的时候,过周末时.learning English isn't in this way that can be successful...hey look at my nick..y not join me to practice it?but first make sure ya know abc of English already