奶奶用英文可以说grandmother或grandma
爷爷用英文可以说grandfather或grandpa
扩展资料：
常用英文家庭称呼
爸爸 father/daddy
妈妈 mother/mamma
阿姨aunt
叔叔uncle
丈人/公公 father in-law
婆婆/丈母娘 mother in-law
奶奶/外婆 grandmother/grandma
爷爷/外公 grandfather/grandpa
哥哥 elder brother
弟弟 younger brother
姐姐 elder sister
妹妹 younger sister
堂(或表)兄弟;堂(或表)姐妹 cousin
儿子 son
女儿daughter
