court前面用on还是in还是at?field呢?

court前面用on还是in还是at?field呢? in court 还是on court? field用in还是on?court是用at吗? China前面用in on 还是at on the basketball court 还是at on the basketball court weekdays 前面用 on 还是用 in 还是用 at ----New Year 前面用介词on 还是in 还是at last winter前面用in还是on还是at? “basketball court” 前用什么介词?in还是on? 英语翻译in court 还是 in the court 还是 at courton the trial 还是 at the trial weekday和weekend前面用in,on还是at chinese new year前面用in、on、at还是其他 “在法庭上”是on the court还是at the court? 英语翻译用on还是in还是at holiday前面用on还是用in 年份前面是用on还是in? many ways前面用in还是on Saturday afternoon前面用on还是in