Here are some of the most complicated examples of changing voices from active to passive. These sentences involve complex structures, multiple clauses, and challenging verb forms:
1. Complicated Present Perfect Continuous Tense:
Active: The scientists have been conducting experiments on this rare species for years, and they have not yet observed any significant behavior changes.
Passive: Significant behavior changes have not yet been observed in this rare species, despite years of experiments being conducted by the scientists.
2. Complicated Past Perfect Continuous Tense:
Active: The company had been developing a groundbreaking technology for over a decade, and they had just launched it before the competition caught up.
Passive: A groundbreaking technology had been developed by the company for over a decade before it was just launched, and the competition caught up.
3. Complicated Future Perfect Tense:
Active: The team will have been collaborating on the project for six months, and they will present the results at the conference.
Passive: The results will be presented at the conference after the project has been collaboratively worked on by the team for six months.
4. Causative Verbs with Modal Auxiliary:
Active: The manager will let her employees leave early if they finish their tasks ahead of schedule.
Passive: Her employees will be let leave early if their tasks are finished ahead of schedule by the manager.
5. Complicated Mixed Modals and Infinitive Phrases:
Active: You should have seen her perform on stage last night; she can really sing beautifully.
Passive: She should have been seen performing on stage last night; her beautiful singing can really be appreciated.
6. Reported Speech with Complex Tenses:
Active: "I will have completed the course by next month," he said confidently.
Passive: He confidently said that the course would have been completed by him by next month.
7. Double Object Verbs with Phrasal Verbs:
Active: She gave her daughter the present and promised to look after the dog while she was away.
Passive: The present was given to her daughter, and a promise was made to look after the dog while she was away by her.
8. Advanced Infinitive Constructions with Emphasizing the Doer (Agent):
Active: They expect him to have been overseeing the construction of the new building for the past year.
Passive: He is expected to have been overseeing the construction of the new building for the past year by them.
9. Complex Subjunctive Mood:
Active: If they were to find any evidence, they would present it to the authorities immediately.
Passive: If any evidence were to be found, it would be presented to the authorities immediately by them.
10. Complicated Relative Clauses:
Active: The company, which has won numerous awards, designed the innovative product.
Passive: The innovative product, which has won numerous awards, was designed by the company.
These examples challenge you to navigate through intricate grammatical structures and tenses while changing the sentences from active to passive voice. Remember to pay close attention to the subject, verb form, auxiliary verbs, and word order during these transformations. Regular practice with such complex examples will greatly enhance your understanding and mastery of active and passive voices.
