Convert the sentence passive voice structure to an active voice structure : The guests must have been informed about the delay by the coordinator.
Convert the sentence provided below from its passive voice structure to an active voice structure :
The guests must have been informed about the delay by the coordinator.
Detailed Solution & Logic
The coordinator must have infromed the guests about the delay.
Explanation:
Step 1: Identify the tense (Passive sentence)
“The guests must have been informed…”
- Structure: modal + have been + V3
- This is Perfect Passive with modal (must have been)
Step 2: Rule for converting to Active
Passive:
modal + have been + V3
Active:
modal + have + V3
Step 3: Apply the rule
- Object (passive) → The guests → becomes object in active
- Subject (passive) → the coordinator → becomes subject in active
- Verb → informed (V3) remains same
👉 The coordinator must have informed the guests about the delay.
❌ Why other options are wrong:
- might inform → wrong modal + wrong tense
- had informed → past perfect (tense mismatch)
- must be informing → continuous tense (incorrect structure)
Extra Facts:
- Modal + Perfect Structure:
- must have done → strong possibility in past
- may/might have done → weaker possibility
- Passive Pattern with Modals:
- must be done (present)
- must have been done (past/perfect)
- Common exam trap:
- Students forget to remove “been” when converting to active
Final Answer:
The coordinator must have informed the guests about the delay.
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