WH- questions are those questions formed with question words: Who, What, When, Where, How.

When we report a question with a question word, the verb, adverbs and determiners change (as usual), but there is no auxiliary verb and the word order of Subject and Verb doesn’t change.

Direct question: “What time do you get home from work?
Reported question: He asked what time I got home from work and NOT He asked me what time did I get home from work.

Here are some other examples:

Direct question: “Why aren’t you coming to the party?”
Reported question: She asked me why I wasn’t coming to the party.

Direct question: “Where do you live?”
Reported question: He asked me where I lived.

Direct question: “Who didn’t do their homework?”
Reported question: She asked them who hadn’t done their homework.