Read the active sentence provided below and complete its corresponding passive transformation by filling in the blank with the exact grammatical verb phrase required.
Answer:Active sentence: 'The ad hoc committee ought to have followed up on the auditor's queries before submitting the final report.'
Passive sentence: 'The auditor's queries 【ought to have been followed up on】 by the ad hoc committee before submitting the final report.'
Passive sentence: 'The auditor's queries 【ought to have been followed up on】 by the ad hoc committee before submitting the final report.'
Answer
ought to have been followed up on
The active sentence uses the semi-modal perfect verb construction 'ought to have' combined with the phrasal-prepositional verb 'follow up on'. Converting this structure into passive voice requires maintaining the modal auxiliary 'ought to have', introducing the passive auxiliary 'been', placing the past participle 'followed', and strictly retaining all associated prepositional particles ('up on'). This yields the exact verb phrase 'ought to have been followed up on'.
Step-by-Step Solution
Key Concept
Passive transformation of semi-modal perfect verbs with phrasal-prepositional structures
Estimated Time:1m 30s