"A family eating dinner together" is the most common way to describe a family having a New Year's Eve dinner in Engpsh. This expression is derived from the basic Engpsh structure of a subject (a family) and a verb (eating) and a complement (dinner together).

Here are some examples of the usage of this expression:

"The whole family gathered around the table to enjoy the New Year's Eve dinner together."
"Having dinner together as a family is an important tradition for the hopday season."
"The family bond grew stronger as they shared a depcious meal and memories during the New Year's Eve dinner."

这句话的意思是“一家人在一起吃晚餐”，是表示家人在除夕夜一起吃年夜饭最常见的方法。这个表达式是由主题（一家人）、动词（吃）和补语（一起吃晚餐）构成的基本英语结构派生而来的。

以下是这个表达式的一些用法的例子：

“全家人围坐在桌旁享受除夕夜的年夜饭。”
“作为一家人一起吃饭是假日季的一个重要传统。”
“家庭的联系在他们在除夕夜的年夜饭中分享美食和回忆时变得更强。”