都正确
英国英语中用at: at weekends/ at the weekend；
美国英语中用on: on weekends/ on the weekend.
如有疑问,请追问.
无疑后请采纳.
书山有路勤为径,学海无涯苦作舟.
-----------与君共勉-----------
英语：at weekends为什么不用on weekends?详细!
3个回答
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