知道，你当时学什么的？

I didn't know that. What were you studying?

youdao

“你以前是做什么的？”她问道，“我是学计算机科学的，”我答道。

What did you do before? "she asked." I was a student of computer science, "I made answer."

youdao

学一学你的爸爸是做什么的？他是一位老师。

A Let's learn What does your father do? He's a teacher.

youdao

你是学什么的我的专业是英语。

What are you studying? I'm an English major.

youdao

你是学什么的我的专业是英语。

What are you studying? I'm an English major.

youdao