1、what are you doing？你在干什么？
2、what are you doing，mon？I need your help.你在干什么妈妈？我需要你的帮助。
3、what are you doing？How can you see?你在干什么？你怎么能看得见？
4、what are you doing？是特殊疑问句，what are you后要加动词的ing形式。
5、What are you drinking?你在喝什么呢？
6、What are you waiting for？你在等什么？
7、What are you talking about？你在说什么？
