Interrogative Adverbs are those adverbs that are used to ask questions pertaining to why, where, when and how?
· Why are the toys littered in the living room?
· Where is my son?
· When are you going to come back?
· How can you do this to me?
Interrogative Adverbs fall in the following sub-categories:
1. Interrogative Adverbs of Time
‘When’ / ‘How’ suffixed with a ‘long’ or ‘often’ is used to denote an adverb of time.
· When will the class end?
· How long will you take to finish the work?
2. Interrogative Adverbs of Place:
The Interrogative Adverb of Place is used to enquire about a particular location.
· Where is the school?
3. Interrogative Adverbs of Reason:
This is used to enquire about the probable reason or cause.
· Why are you going to the office again?
4. Interrogative Adverbs of Manner:
The word “How” is used to ask about the manner in which the verb occurs.
How quickly can you finish the assignment?
5. Interrogative Adverbs of Amount, Quantity and Degree:
· How much cake have you got with you?
· How many apples have they produced?
· How much more time are you going to take?
Thus, we see that Interrogative Adverbs are used in sentences to frame different questions.
USAGE OF WHEN, WHERE, WHY and HOW?
Ø When is used to enquire about time of the action.
· When are you arriving at the station?
Ø Where is used to enquire about the location where the action is taking place.
· Where shall we be meeting next week?
Ø Why pertains to the cause or reason of the action taking place.
· Why are you in such a hurry to reach the college?
Ø How is used to ask question related to manner, time, quantity, amount and degree.
· How do you start the car? (Manner)
· How swiftly can you drive the car? (Time)
· How old is your mother? (Degree of an Attribute)
· How much sugar would you like to be packed? (Quantity)
· How many pencils are to be put the box? (Amount)
· How much is the fever now? (Degree)
· How frequently do you take this supplement? (Frequency)
While using the Interrogative Adverb in a question, one must invert the Subject and the Verb, so that the verb precedes the Subject in the order of the sentence.