on the weekend的weekend可以写成复数形式吗请写出具体的原因——

sarah played tennis last weekend.we went to the mountains by bicycle testerday.jennis stayed at home and watched tv on sunday.the children went to the beach on saturday.坐着几个的肯定句,否定句,一般疑问句,特殊疑问句（1.last weeke 关于on weekend和on the weekend的问题是on weekend还是on the weekend,还是两者都可以? on the weekend 和over the weekend的区别 over the weekend与on the weekend的区别! at the weekend 和 on the weekend的区别 at weekend,on weekend,at the weekend ,on the weekend和on weekends的区别?尽量详细些... 关于on the weekend的作文 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? 英译汉：Do you have any plans for this weekend?I'm not even sure that Chinese culture has a weeke英译汉：不要机器的!Do you have any plans for this weekend?I'm not even sure that Chinese culture has a weekend (Saturday and Sunday) in the on weekends和on the weekend的区别 Sally often writes to her cousin at the weekend（同义句） Sally often ()()()her cousin at the weekeSally often ()()()()her cousin at the weeke 我们说 on weekend ,at weekend,还是in the weekend 一下短语有什么用法区别?At weekend.On weekend.At the weekend.On the weekend. on the team ,on the weekend 和英式英语 in the team,at the weekend 的区别. () the weekend in or on? I usually shopping on the weekend.的错误 do on weekend?do What you the 组成的句子