家人都很开心英文

Eachandeverysinglememberofmyfamilyishappy.再看看别人怎么说的。

My family is very happy every day.

Greens is happy.表示整体用单数

Because the Spring Festival is approaching , my family and I are all happy .祝学习进步，天天快乐，万事如意！满意请采纳！：）

仅从字面翻译的话，应该是：Everyone in/of the family is happy. 或 Every family member is happy.但是，我估计你是文章中具体用到的一句话，也就是说，应该有上下文的。那样的话，如果你前面已经提到了“family member”等类似词意的话，直接一个“Everyone of us is happy.”就搞定了。

The Green's are very happy.

The Greens are all very happly.

The Greens are very happy.

Each and every single member of my family is happy.