Who does wash hands before dinner 为什么不是Who washes handsbefore dinner ？这里需要does作助动词！特殊疑问句的组成：特殊疑问词+一般疑问句【特殊疑问词+be/助动词/情态动词+主语+谓语如：What does she like?What class are you in﹖Where are you from﹖What time does he get up every morning﹖How do you know﹖

I am a doctor.划线部分提问

Who am I ?