"A gas saving device was invented by someone."
This sentence cannot be changed into passive
This sentence can't be changed into a passive voice.
you
washed the windows had been
The object from the active sentence goes to the subject position in the passive (only it is not called the subject in the passive sentence) egYouThe verb form for passive is be + past participle. In this example ( present continuous) it is not as straight forward as present simple or past simple but the verb phrase becomesare being watched.You are being watchedThe subject of the active sentence is called the agent in a passive sentence and can be left out of the passive sentence if you want. If you want to add the agent then you use by + agent:You are being watched by the teacher
To change an active sentence to passive, identify the object in the active sentence and make it the subject in the passive sentence. Move the subject of the active sentence to the phrase with "by" and change the verb to its past participle form. To change a passive sentence to active, identify the subject in the passive sentence and make it the subject in the active sentence. Use an appropriate active verb to describe the subject's action and add the original object of the passive sentence as the direct object in the active sentence.
This sentence cannot be changed into passive
This sentence can't be changed into a passive voice.
You change passive voice to active voice by making the actor(s) the subject of the sentence, e.g., "the question was asked by the user" (passive) versus, "the user asked the question" (active).
To change a sentence from active to passive voice, move the object of the active sentence to the subject position in the passive sentence and add a form of the verb "to be" along with the past participle of the main verb. For example, "I ate the cake" in active voice becomes "The cake was eaten by me" in passive voice.
you
To change a sentence from active voice to passive voice, move the object of the active sentence to the beginning, followed by the verb in the past participle form and the subject at the end with "by" if needed. To change a passive sentence to active, identify the subject of the passive sentence, move it to the position of the subject in the active voice, and make the original subject the object of the active sentence.
No, "He is a boy" is not in passive voice. Passive voice involves rearranging the sentence to emphasize the receiver of the action rather than the doer, which would change the sentence to something like "The boy is being called."
When the subject performs the action in the sentence.
The sentence in passive voice would be: "Sweet is smelled by the rose."
Passive is to change as active is to act. In passive voice, the subject of the sentence receives the action, while in active voice, the subject performs the action.
To change a future interrogative sentence into a passive voice sentence, you would generally rearrange the sentence structure so that the object of the active sentence becomes the subject of the passive sentence. For example, "Will they finish the project?" could be changed to "Will the project be finished by them?"