"father"这个名词的所有格形式是 father's，表示“父亲的所有物”或“父亲的家”。当"father"表示多个父亲时，其复数形式为 fathers。

例如：

1. Those are my father's private papers.

2. She felt strange sitting at her father's desk.

3. Mary inherited her father's blue eyes.