passive
The sentence "All of the clues were carefully hidden by your teacher" is a passive sentence because the subject ("all of the clues") is being acted upon by the verb ("were hidden").
This sentence is in the passive voice. In active voice, it would be "The teacher confiscated the toy."
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.
active
To change passive voice to active voice, identify the object of the passive sentence and make it the subject of the active sentence. Then, identify the subject of the passive sentence and make it the object of the active sentence. Finally, rewrite the sentence using the active verb form. For example, "The book was read by John" (passive) can be changed to "John read the book" (active).
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.
This sentence is in the passive voice. In active voice, it would be "The teacher confiscated the toy."
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
active and passive
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.
The sentence "Sentences can be written in active and passive voices" is a declarative sentence written in passive voice.
active
The sentence "The pen was missing" is in passive voice, as the subject (the pen) is receiving the action (being missing) rather than performing it.
The sentence is passive.
active
This is not an active sentence so it cannot be changed to a passive sentence. Active sentences have a subject and a verb. eg The dog chased the cat. As a passive sentence -- The cat was chased.
The sentence is active. To make it passive, you would write "Lunchtime was announced by the noon whistle."
The mayor has given gifts to the pupils. -- active The pupils have been given gifts by the mayor -- passive Notice "the mayor" is the subject of the active sentence. In the passive sentence "the mayor' is the agent (by + agent). The object of the active sentence (the pupils) goes at the beginning of the passive sentence. The verb in the active sentence is present perfect, The passive form for present perfect is: have/has + been + past participle