Question

Raghu has finished his homework. He went to bed.

Answer 1

Has Rghu finished his homework before going to bed?

Explanation:

Raghu has finished his homework. He went to bed.

This sentence belongs to present perfect tense.

The formula for sentence structure is:

Subject + Has / Have + 3rd form of verb + Object

To convert it into negative sentence "not is used after has / have.

Similarly to make it interrogative has/have is used at the beginning of the sentence.

Negative sentence:

Raghu has not finished his homework therefore he can not go to his bed.

Interrogative sentence:

Has Raghu finished his homework before going to bed?