父亲爸爸用英语是Father, Dad。
fathern。父亲，爸爸；神父；祖先；前辈；vt。发明，创立；当…的父亲。
father用作名词时意思是“生身之父”，也可用于指“丈夫之父”，即“公公”，或“妻子之父”，即“岳父”。是可数名词，用作对家人的称谓时，可视为专有名词，一般不用冠词。也可用于比喻，一般无冠词。
dad。爸爸，爹地；这个单词名词形式等同于daddy，daddy的叫法更亲密些，一般小孩子叫爸爸比较多。
双语例句
1、请你在父亲节给爸爸最美好的祝福。
Please give your father the best wishes on Father's Day.
2、他对父亲说：爸爸，这里一定是汽车幼儿园吧？
He said to his father, Papa, it must be an auto kindergarten here?
3、什么是思考如何成为父亲、好爸爸吗？
What is to be thought about fatherhood and how does one become a good father?
4、11岁的萨莎•奥巴马告诉父亲说：爸爸，做得好。
Good job, Dad. You didn't mess up, 11-year-old Sasha Obama told her father.
5、小孩问他的父亲说：爸爸，结婚的花多少钱啊？
A little boy asked his father: Daddy, how much does it cost to get married?
6、小女对父亲说，爸爸，书里说，婚姻是在天堂缔结的，对吗？
A girl said to her father,'Dad, it says that marriages are made in heaven.