爸爸father. 妈妈mother. 儿子son. 女儿daugher. 姐姐Elder sister.妹妹little sister(ounger sister).哥哥elder brother(older brothere).弟弟younger brother 兄弟姐妹brothers and sisters叔叔大伯uncle .阿姨aunt .爷爷外公grandfather(grandpa).奶奶外婆grandmother(grandma).外公外婆grandparents.妻子wife.丈夫husband.未婚夫fiance.未婚妻fiancee.嫂子sister-in-law.20.曾孙:great-grandson 。 .嫂嫂:sister