为什么What are you doing ,Li Yan?"you"前是“are” 而不是“is”

为什么What are you doing ,Li Yan?"you"前是“are” 而不是“is” what are you doing 为什么不是is? 英语为什么要What are you doing?而不是What do you doing?我经常把are和do 弄混 what are you doing 为什么不说What IS your name? "What are you doing"asks Mrs li"asks为什么在Mrs li前面 what are you doing. what you are doing what are you doing What are you doing? what (is are )you (do doing ) now WHAT IS NEW?HOW ARE YOU DOING? what's your favorite subject?为什么是is your而不是are you