ACTIVE AND PASSIVE VOICE Active voice is a grammatical voice common in many of the world's languages. Active voice is used in a clause whose subject expresses the agent of the main verb. That is, the subject does the action designated by the verb. A sentence whose agent is marked as grammatical subject is called an active sentence. Passive voice is a grammatical voice common in many languages. In a clause with passive voice, the grammatical subject expresses the theme or patient of the main verb – that is, the person or thing that undergoes the action or has its state changed. This contrasts with active voice , in which the subject has the agent role. - THE BASIC FORMULA OF PASSIVE VOICE subject + auxiliary verb + verb 3 . Auxiliary verb which we will use to make the passive voice can be either primary auxiliary verb (is, am , are , were , was , be , has been and being) or can also be a combination of two