When the verb consists of two or more words, the interrogative sentence is formed by putting the first auxiliary verb before the subject.

• He has been playing. (Assertive)
• Has he been playing? (Interrogative)
• She is coming. (Assertive)
• Is she coming? (Interrogative)
• I am working. (Assertive)
• Am I working? (Interrogative)

The same rules apply when the sentences are in the passive voice.

• A letter has been written by me. (Assertive)
• Has a letter been written by me? (Interrogative)

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1. The Sentence