on Sunday和on Sundays有什么不同?

英语 on sunday 和 on sundays 有什么区别啊? on Sunday和on Sundays有什么不同? On sunday /on sundays 的区别 on sudays和 on sunday的区别we have no claases on （sunday)为什么这里用sunday而不是sundays? on Saturday and Sunday和on Saturdays and Sundays的区别 on sunday与on sundays有什么区别? On sundays every sunday和on sundays有什么重要的区别,是不是都指每个星期日 what do you usually do on sundays用next sunday代替on sundays Liu Ying plays basketall on Sundays(用next Sunday代替on Sundays) Lily play basketball on Sundays.(用next Sunday代替on Sundays) Lily is( )( )play basketball nextSunday Liu Ying plays basketball on Sundays．(用next Sunday代替on Sundays) They go to the movies on Sundays.(用last Sunday 替换on Sunday 改写句子） What do they often do on Sundays?Sundays可以改成Sunday 吗?为什么? on sundays 还是 in sundays I often go to the park on( )A.a Sunday B.Sunday C.Sundays I often go to park on ( )A.a Sunday B.Sunday C.Sundays We often go to the park on Sundays.()you often()to the park on Sunday?