family的复数是families。family作"家庭" 时，有复数形式，表示几个家庭。例如，Many families的意思是许多家庭，Sylvanian Families的意思是森林家族，Column Families的意思是装载列族。
例句：
1、There are 689 families in the town.
这个小镇有689户人家(家庭)。
2、Women control the purse strings of most families.
在大多数家庭中，女人掌控着财政大权。
3、They consider the plan to be of dubious benefit to most families.
他们认为这项计划对大多数家庭不一定有好处。
4、Many children are now born into or raised in one-parent families.
现在很多孩子在单亲家庭中出生或成长。
5、I thought it was unethical for doctors to operate upon their families.
