In the old days,American families were bigger.People had more children,and grandparents and great-grandparents lived with their families.But now, families are smaller, and many old peoplelive alone.At the same time, Americans are living longer and longer.The number of old people is always growing.
以前美國都是大家庭。人們孩子很多,祖父母和曾祖父母都和家人在一起生活。但現(xiàn)在,家庭越來越小,許多老人獨自生活。與此同時,美國人越活越長。老年人的數(shù)目總在不斷增長。