There are usually only a husband,(wife)and children in the American family.
They live in their own (house).Grandparents (seldom) live in the same home with their married son and daughters,and uncles and aunts almost never (do).American have (fewer) children than in many other countries.An American couple has two (chidren) so that the average American family has ( four) people living together as a household unit(家庭单位).Each child has a room ( of ) his or her own.If American are asked ( to name) the members of their families,family structure(家庭结构) becomes clear.Married American grown-ups will name their husband or wife and their children,if they have any,(with) their “immediate family”.