Which of the following options is the most suitable conversion of the following sentence into Passive Voice?
Have you patented your new invention?
Show answer & explanation
Correct answer: D
Explanation
Correct Answer
Has your new invention been patented?
Explanation
The active voice sentence is an interrogative sentence in the Present Perfect tense ("Have you patented..."). To change a Present Perfect question into the passive voice, the structural formula is: Has/Have + Subject (the original object) + been + Past Participle (V3).
While the active sentence uses "Have" to agree with the plural/second-person pronoun "you," the new subject in the passive voice is "your new invention," which is singular. Therefore, the helping verb must shift to "Has" to maintain correct subject-verb agreement. The first option is incorrect because it mistakenly uses the plural verb "Have" with a singular subject, while the second and third options completely fail to maintain the Present Perfect tense structure.
Key Points
Interrogative active-to-passive transformations require a dual verification step. First, ensure the primary tense structure is preserved, and second, verify that the initial auxiliary verb changes its singular or plural form to match the new incoming subject.