New Year's Eve 是指:除夕 ; 新年前夕(为具体的日期)一般表达时间时常用到三个介词:in on atin+年份/月份(但不具体到某天某时)on+具体的某天,如on October,10th 或者星期几,如 on Mondayat+具体的时间点,如at 6:30所以,应为 on New Year's Eve 例:All family members will be together and wait for the coming of new year on New Year's Eve.