祝爸爸生日快乐用英语怎么说怎么写

"Happy birthday, Dad" 是祝爸爸生日快乐的英文表达方式。
"Happy" 是形容词，意为“快乐的”；"birthday" 是名词，意为“生日”；"Dad" 是名词，意为“爸爸”。
这种用法源于英语世界里对父亲的称呼。 “Happy birthday” 是比较常见的生日祝福语。
例句：
"Happy birthday, Dad! I hope you have a great day today."
"爸爸，生日快乐！希望你今天过得很开心。"
"Wishing you a very happy birthday, Dad! Love you."
"祝你生日快乐，爸爸！爱你。"
"Happy birthday to the best Dad in the world. Have a wonderful day!"
"祝世界上最好的爸爸生日快乐。美好的一天！"