"The students attended a concert in the city" is an active voice sentence. The subject, students, performs the action of the verb, attended, and concert is the object.
The passive construction of that sentence is "A concert was attended by the students." In a passive sentence, the object becomes the subject and the subject becomes the object. The verb phrase is a form of be and a past participle.
"Could" is a modal auxiliary verb used to express possibility, ability, or permission. It is not considered active or passive because it doesn't indicate a specific action or the doer of the action.
Active voice is when the subject performs the action stated by the verb ("The teacher graded the papers"). Passive voice is when the subject is acted upon by the verb ("The papers were graded by the teacher"). Converting from active to passive voice involves making the object of the active sentence the subject of the passive sentence and using a form of "to be" + the past participle of the main verb.
Everyone will remember the concert. A tip for active vs. passive voice: If you want to write a sentence in active voice, avoid the verb "to be" and take the participle (in this case "remembered") and use it as the main verb of the sentence, as in the example.
the cat was injured in a fight passive or active
passive
Passive (diffusion).
Passive
active and passive
== == "English grammer active and passive voice change from active to passive .
"The policeman chased after Fred" is active voice.
is a thermocouple an active or passive transducer?-why?
Passive is to change as active is to affect.