第６課　他是工程師

小雲：大衛，你媽媽是醫生嗎？

大衛：我媽媽是醫生。

小雲：你爸爸也是醫生嗎？

大衛：我爸爸不是醫生。他是工程師。

Lesson 6. He's an Engineer

Xiaoyun: David, is your mom a doctor?

David: Yes, my mom is a doctor.

Xiaoyun: Is your dad a doctor, too? 

David: No, my dad is not a doctor.  He's an engineer.