"爸爸去哪儿" 英文可以说作 "Where Did Daddy Go?" 或者 "Where Has Daddy Gone?"。这个短语的来源可能源于中文语言中对父亲的称呼，并且在英文中表达了对父亲去向的询问。例句如下：

"Where Did Daddy Go?"

"Where Has Daddy Gone?"

"I'm not sure, honey. Let's go find him together."

"Dad, where did you go? I've been looking for you everywhere!"