(如果表示“计划中即将举办”,可改为:
We(aregoingtohave)apartyateighto'clockintheevening(晚八点已经不是afternoon了)ontheNewYear'sDay.
如果说新年那晚8点我们正在开晚会.==应该是过去进行时,或将来进行时
Wewerehavingapartyateighto'clockintheeveningthelastNewYear'sDay.(上个新年)
Wewillbehavingapartyateighto'clockintheeveningonthecomingNewYear'sDay.(即将到来的新年)