这是一张家庭照片英文怎么说

This is a Family Portrait!

呵呵，家庭照片可以说family photo,不过老外常说family portrait，有一首蛮好听的歌，名字就是这个，你可以去搜索下。

四个空位的话可以写It's a family photo，或者It's a family portrait.