1 特殊疑问词 + be + S.+...
What is this
Who is that man
Which is his dog
Why are you late
When were you born
2 特殊疑问词 + 助动词 + S.+ V原形+...
What do you want
Where does your brother live
How do you spell this word
Whom do you want to see first
3 特殊疑问词 + 动词的相应形式 +...
Who is singing
Who teaches them English
Whose dog is really cute
4 特殊疑问词 + 情态动词 + S.+ V原形+...
What can I do for you