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.
On New Year\'s Eve
在除夕夜 除夕夜只是一天 所以具体某一天介词要用on
类似的还有 on Christmas Eve
而在新年期间圣诞节期间介词就分别用during和at
at Christmas
during the new year
