what are you doing中doing放在疑问词后为什么不是动词原形do,疑问词后面的动词不是都要用原形吗?

what are you doing? What are you doing? what are you doing What are you doing? WHAT ARE YOU DOING? what are you doing? what are you doing和what you are doing区别 what are you doing now, what are you doing?翻译 what are you doing here what+are+you+doing是什么意思 What are you doing there? What are you doing there? what are you doing?today what are you doing中文 what are you people doing? what are you doing?译 Then,what are you doing