Passive Voice Future Modals

Respuesta correcta: D) The bridge was built in 1890.

• A) The bridge built in 1890.Without 'be' this is not a passive form; the verb reads as intransitive.
• B) The bridge is building in 1890.'Is building' is an active progressive, not a passive.
• C) The bridge built itself in 1890.The reflexive adds no passive auxiliary here.
• D) The bridge was built in 1890.'Was built' is 'be' plus participle, the passive pattern.

Respuesta correcta: A) My bicycle was stolen.

• A) My bicycle was stolen.'Was stolen' places the object in the subject position.
• B) My bicycle is stole.The simple past cannot follow 'is' in a passive form.
• C) My bicycle stole.This reads as an active verb with the bicycle as agent.
• D) My bicycle was stealing.'Stealing' is a gerund, not the required past participle.

Respuesta correcta: B) will be submitted

• A) will submitThat is the active form with the subject doing the submitting.
• B) will be submitted'Will be' plus participle is the future passive structure.
• C) is submittingThe present continuous is not a future passive.
• D) was submittedThe simple past passive refers to a past event.

Respuesta correcta: D) The project must be finished today.

• A) The project must finished today.A participle cannot follow the modal directly; 'be' is needed.
• B) The project must being finished today.'Must being' is not grammatical.
• C) The project must have finish today.A bare base form cannot follow 'have' in a passive.
• D) The project must be finished today.'Must be' plus participle is the modal passive pattern.

Respuesta correcta: D) The agent is not identified

• A) A particular person broke itNaming the agent would require a 'by' phrase.
• B) Nobody broke the windowThe passive does not imply absence of an agent.
• C) The window broke by itselfThat reading has no basis in the sentence.
• D) The agent is not identifiedThe passive omits the doer when no 'by' phrase appears.

Respuesta correcta: A) 'Was ate' must be 'was eaten'

• A) 'Was ate' must be 'was eaten'The passive requires the past participle.
• B) Nothing is wrong with the sentenceUsing the simple past after 'was' is a standard passive error.
• C) 'Was' must be 'were'The subject 'cake' is singular, so 'was' is correct.
• D) 'By' must be removed'By' is optional in the passive but not incorrect here.

Respuesta correcta: C) The letter should have been signed earlier.

• A) The letter should have signed earlier.That form is active and assigns the signing to the letter.
• B) The letter should been signed earlier.'Should been' lacks the required infinitive marker.
• C) The letter should have been signed earlier.'Should have been' plus participle is the modal perfective passive.
• D) The letter should being signed earlier.'Should being' is not a valid sequence.

Respuesta correcta: A) has been damaged

• A) has been damaged'Has been' plus participle gives the present perfect passive.
• B) has damagedThat is the active form with the environment as agent.
• C) has being damaged'Has being' is not grammatical in this structure.
• D) was damagedThe simple past passive refers to a completed past situation.

Respuesta correcta: C) The school is being painted.

• A) The school is painted.That is the simple present passive, not the continuous.
• B) The school is painting.That reads as an active verb with the school as agent.
• C) The school is being painted.'Is being' plus participle is the present continuous passive.
• D) The school is being paint.A base form cannot follow 'being' in this structure.

Respuesta correcta: A) It emphasises the object or patient rather than the doer

• A) It emphasises the object or patient rather than the doerThat is the pragmatic function of the passive.
• B) It is used only when the agent is unknownIt also emphasises an unknown or irrelevant agent, but that is not its only use.
• C) It changes the tense of the verbThe tense is marked by 'be', which does not itself change it.
• D) It always requires a 'by' phraseThe 'by' phrase is optional and often omitted.

Respuesta correcta: C) must not be taken

• A) must not takeThat is the active form and assigns the taking to the books.
• B) must not be takeA base form cannot follow 'be' in a passive.
• C) must not be taken'Must not be' plus participle expresses the prohibition in the passive.
• D) must not been takenThe participle form requires 'be' after the modal.

Respuesta correcta: D) The agent is unimportant; the timing is the focus

• A) The speaker does not know the agentThat is only one of several reasons to use the passive.
• B) The action has not happened yetThat is expressed by 'will', not by the passive voice.
• C) The results were announced in the pastThe sentence is in the future passive.
• D) The agent is unimportant; the timing is the focusThe passive foreground the event rather than the person behind it.

Respuesta correcta: C) Was the letter delivered yesterday?

• A) Did the letter was delivered yesterday?Auxiliary 'did' cannot be combined with the passive 'was'.
• B) Has the letter delivered yesterday?The present perfect cannot refer to a finished past moment such as 'yesterday'.
• C) Was the letter delivered yesterday?'Was' leads the question and 'delivered' is the participle.
• D) The letter was delivered yesterday?Without an auxiliary at the front it is not a question.

Respuesta correcta: B) was taken

• A) tookThe simple past alone does not mark the passive voice.
• B) was taken'Was taken' places the decision as completed before the announcement.
• C) has take'Has' requires a participle, not a base form.
• D) was takeA base form cannot follow 'was' in a passive.

Respuesta correcta: A) 'Are build' must be 'are built'

• A) 'Are build' must be 'are built'The passive requires the past participle 'built'.
• B) Nothing is wrong with the sentenceThe base form after 'are' is a standard error.
• C) 'Are' must be 'were''Houses' is plural, so 'are' is the correct auxiliary.
• D) '1920' must be '1921'The year is arbitrary and is not the error.

Respuesta correcta: C) The bridge was designed by a famous architect.

• A) The bridge was designed of a famous architect.'Of' cannot introduce the agent of a passive verb.
• B) The bridge was designed with a famous architect.'With' names an instrument or tool, not the agent.
• C) The bridge was designed by a famous architect.'By' introduces the agent, the architect.
• D) The bridge was designed for a famous architect.'For' marks a purpose or a recipient, not the agent.

Respuesta correcta: B) The roof must be repaired.

• A) The roof must repaired.A participle cannot follow the modal without 'be'.
• B) The roof must be repaired.'Must be' plus participle is the modal passive.
• C) The roof must be repair.A base form cannot follow 'be' in a passive.
• D) The roof must be repairing.'Must be repairing' is not a passive form.

Respuesta correcta: D) The work will have been completed by then.

• A) The work will have completed by then.That is the active form and makes the work the agent.
• B) The work will been completed by then.'Will been' lacks the required infinitive marker.
• C) The work have been completed by then.A bare future perfect needs the auxiliary 'will'.
• D) The work will have been completed by then.'Will have been' plus participle is the perfect future passive.

Respuesta correcta: B) A passive sentence with an unidentified agent

• A) An active sentence with two verbsOnly one verb appears, in the 'be' plus participle form.
• B) A passive sentence with an unidentified agent'Were made' is the passive pair and no 'by' phrase appears.
• C) A conditional sentenceNo conditional structure is present.
• D) A sentence with a modal verbNo modal is used here.

Respuesta correcta: B) Both express the same event but shift the focus to a different element

• A) They describe two different eventsThe underlying event is the same in both voices.
• B) Both express the same event but shift the focus to a different elementThe proposition is unchanged while the emphasis moves.
• C) Only the passive can express past eventsBoth voices work with every tense.
• D) The active always sounds more formalRegister depends on context, not on the voice used.