There can be TWO kinds of interrogatives;
Interrogatives starting with auxiliary
verbs or modal operators (do, be-form have, shall, will
and their inflectional forms).
The method of converting them into passive voice is quite simple. All the changes as explained in introductory chapter are applied with slight awareness of the fact that how to make interrogatives, the way you make interrogatives in tenses.
Active voice: When are you giving us the
Active voice: Where had he taken you?
Active voice: Are you speaking to me?
It is important to know that the questions starting with who is a different matter and treated distinctly. In order to convert any interrogative sentence with who into passive voice you have to do the following.
Use by whom at the beginning of the sentence.
Use of Auxiliary
The use of auxiliary has already been explained in introductory chapter, still there is a detailed information as follows;
If sentence is indefinite use auxiliaries of continuous, like;
is, am, or are in present indefinite tense.
If sentence is continuous use being after auxiliary, like;
is being, am being, or are being in present
If sentence is perfect use been after auxiliary, like;
have been, or has been in present perfect
Who knocks at the door? (Present Indefinite
Who wrote this letter? (Past Indefinite
Who will call him? (Future Indefinite
Who is doing this? (Present Continuous
Who was delivering messages? (Past Continuous
Who will have worn this dress? (Future
Who has opened the door? (Present Perfect
Who had driven the car? (Past Perfect
Who will have served the purpose? (Future
Quite similarly you can combine negative with interrogative. Here are some examples.
Examples of who-interrogative combined with negative “not“
Who was not answering this very simple
Who hasn’t understood my lecture?
Who will not complete the task?
Who didn’t arrange the expenses?
Who was not enjoying the school trip?