Select the correct passive form of the given sentence.
"The doctor prescribed the medicine."
Show answer & explanation
Correct answer: D
Explanation
The correct passive form of the sentence "The doctor prescribed the medicine" is "The medicine was prescribed by the doctor."
Explanation:
Subject and Object Swap: In the active voice, "The doctor" is the subject and "the medicine" is the object. In the passive voice, "the medicine" becomes the subject.
Verb Tense: The original sentence uses the simple past tense (prescribed). To form the passive voice in the simple past, you use was/were + past participle (V3).
Structure: Since "the medicine" is singular, we use was followed by the past participle prescribed.
The Agent: The original subject (The doctor) is introduced by the preposition by at the end of the sentence.