In the questions below the sentences have been given in Active/Passive voice. From the given alternatives, choose the one which best expresses the given sentence in Passive/Active voice.
I saw him leaving the house
Answer: D
Correct answer: He was seen leaving the house by me
The object him becomes the subject, and the participle leaving is untouched - only the main verb changes to the passive. The option putting leaving the house at the front detaches it from the person it describes.
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He teaches us Grammar.
Answer: D
The sentence is in the present tense, the conversion needs to be in the same. All the options other than option (b) are either in the past tense or the future. Even if the rules of conversion are being followed in them, they are still wrong as they dilute the meaning of the sentence
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People claim to have seen the suspect in several cities.
Answer: C
Correct answer: The suspect is claimed to have been seen in several cities
Two verbs go passive: people claim becomes is claimed, and to have seen becomes to have been seen. The options that convert only the second lose the claiming, which is what the sentence is chiefly about.
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The noise of the traffic kept me awake
Answer: C
Correct answer: I was kept awake by the noise of the traffic
The object me becomes the subject and the noise of the traffic becomes the agent. Awake is the complement of kept and does not change; waking would make it a verb.
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It is time to ring the bell.
Answer: D
Correct answer: It is time for the bell to be rung
It is time to ring the bell has an active infinitive; its passive counterpart is for the bell to be rung, which introduces the thing acted on with for. For the bell to ring is active again, and to be ring uses the base form where the participle belongs.
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Who teaches you English ?
Answer: B
Correct answer: By whom are you taught English ?
The tense stays present simple, so the passive is are taught. The interrogative subject who becomes by whom, and the question order puts the auxiliary first. Teach has two objects and it is the person that becomes the subject, leaving English in place.
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You must look into this matter
Answer: C
Correct answer: This matter should be looked into by you
Look into is a prepositional verb, so into stays with the participle. Must becomes should in the passive of an obligation, and the options with has been and may change an obligation into a completed act or a permission.
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Who is creating this mess?
Answer: D
Correct answer: By whom is this mess being created?
Three things must hold at once: the tense stays present continuous, so the passive is is being created; the interrogative subject who becomes the agent by whom; and because it is a question the auxiliary comes before the subject. Only the keyed option does all three.
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They are building a house next door to our school
Answer: D
Correct answer: A house is being built by them next door to our school
The present continuous becomes is being built, and next door to our school tells where the building is happening, so it belongs with the verb. Putting it immediately after a house makes it describe the house rather than the building work.
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Somebody told me that there had been an explosion in the Town Hall
Answer: D
Correct answer: I was told by somebody that there had been an explosion in the town hall
Only the main verb changes: told me becomes I was told. The reported clause there had been an explosion is untouched, which is why the options that shift it to was or drop the agent alter more than the voice.
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