Interrogative Adverbs

Definition Of Interrogative Adverb:

Adverbs of Degree used in asking questions.

Example Sentences for Interrogative Adverb

Why are you late?

When did you come?

Where are you going?

Why did you go there?

Whence will the train arrive?

What are idioms?
Idioms can be defined as a group of words having a meaning different from the individual meanings of each word in the group.