There are six basic forms used in making information
("Wh-") questions in English: two if the verb is BE, two
if there is an auxiliary verb and a main verb, and two
if there is only a verb (not BE and not an auxiliary and
a verb).

Let's look at the form when there is an auxiliary verb
and a main verb.

English verbs often have two or more parts and include
combinations such as these:

am / are / is / was / were giving

can / could / may / might / must / shall / should /
will / would give

have / has / had given

has / have / had been giving

am / are / is / was / were given

am / are / is / was / were being given

have / has / had been given

have / has / had been being given

could / may / might / must / should / would have given

could / may / might / must / should / would have been given

could / may / might / must / should / would have been
being given

In all the combinations above, the first item is an
auxiliary verb and the last item is a main verb.
If the complete verb has more than one part (for
example, had been giving or would have been
given), the complete verb has more than one auxiliary.

If a sentence has an auxiliary verb, there are also two
forms for "Wh-" questions. If the question asks about
the subject (or part of the subject), the form is

Wh + complete verb + other words?

Examples:

??? is sitting beside Chiharu. ----->
Who is sitting beside Chiharu?

??? might be here tomorrow. ----->
Who might be here tomorrow?

??? was given to Bill. ----->
What was given to Bill?

??? has happened. ----->
What has happened?

??? could have done this. ----->
Who could have done this?

???'s brother is working in New York. ----->
Whose brother is working in New York?

???'s books were left in the classroom. ----->
Whose books were left in the classroom?

??? people will be coming to the party. ----->
How many people will be coming to the party?

The ??? house has been bought by Julia's family. ----->
Which house has been bought by Julia's family?
(What house has been bought by Julia's family?)

??? sugar was used to make these cookies. ----->
How much sugar was used to make these cookies?

If the sentence has an auxiliary verb and if the "Wh-"
question asks about words that are after the subject,
the form is

Wh + first auxiliary + subject + rest of the verb +
other words?

Examples:

Bill will ??? tomorrow. ----->
What will Bill do tomorrow?

The party was held ??? ----->
When was the party held?
Where was the party held?

The party is being held at ???'s house. ----->
Whose house is the party being held at? [informal] /
At whose house is the party being held? [formal / careful]

I've found ???. ----->
What have you found?

Nancy can speak ??? languages ----->
How many languages can Nancy speak?

Jae-Hoon has lived in ??? countries.----->
How many countries has Jae-Hoon lived in? [informal] /
In how many countries has Jae-Hoon lived? [formal / careful]

You have been eating ???. ----->
Who have you been eating?

Lucinda has gone ???. ----->
Where has Lucinda gone? /
Why has Lucinda gone?

He had worked ??? before he stopped. ----->
How long had he worked before he stopped?

Yasuhiro can run ??? fast. ----->
How fast can Yasuhiro run?

The twins will celebrate their ??? birthday. ----->
Which birthday will the twins celebrate?

They have been working ???. ----->
How long have they been working?
Where have they been working?
How much have they been working?

You would gone ??? if you had had enough time .----->
Where would you have gone if you had had enough time?

They might have been being punished ???. ----->
Why might they have been being punished? /
What might they have been being punished for? /
How come they might have been being punished? *

____________________________________

Special Notes: