This is a photo of Mr.Green's family.The man in the photo is Mr.Green,the father.The woman is
the mother.They have two daughters.The girl behind(在……后面)Mr.Green is Mary.She's fourteen.
The girl behind Mrs.Green is Jane.She is eleven.Mary and Jane are in the same(同一的) school,but
not in the same grade(年级).Mary is in Grade Three.Jane is in Grade One.They are good students.