Voice in English grammar describes the relationship between the action expressed by the verb and the participants identified by its arguments (subject, object, etc.). When the subject performs the action, it is in the Active Voice. When the subject receives the action, it is in the Passive Voice.

| Voice | Structure | Example Sentence |
|---|---|---|
| Active Voice | Subject + Verb + Object | The teacher explained the lesson. |
| Passive Voice | Object + Verb + Subject (by) | The lesson was explained by the teacher. |
| Active Voice | Subject acts | The dog chased the cat. |
| Passive Voice | Object receives action | The cat was chased by the dog. |
| Active Voice | Subject performs action | She wrote a letter. |
| Passive Voice | Object is emphasized | A letter was written by her. |
| Active Voice | Subject does the work | The chef cooked the meal. |
| Passive Voice | Object is highlighted | The meal was cooked by the chef. |
| Active Voice | Subject initiates | The students completed the project. |
| Passive Voice | Object is focused | The project was completed by the students. |
In Active Voice, the Subject acts. In Passive Voice, the Focus shifts to the Object receiving the action.
To convert Active Voice to Passive Voice, follow these simple steps: First, identify the subject, verb, and object. Move the object to the beginning of the sentence. Add a form of the verb 'to be' (am, is, are, was, were, been) based on the original tense. Use the past participle (3rd form) of the main verb. Finally, add 'by' followed by the original subject if necessary.
Active voice is used when the person or thing doing the action is the most important part of the sentence. It makes your writing stronger, more direct, and easier to read. For example, in a real-life scenario: "The chef cooked a delicious meal." Here, the chef is the hero of the sentence.
Passive voice is used when the action itself or the receiver of the action is more important than the doer. It is often used in formal reports or when the doer is unknown. Real-life scenario: "The window was broken." We might not know who broke it, but the broken window is the main point.
Active Voice means the subject does the work (Subject + Verb + Object). Passive Voice means the action is done to the subject (Object + be + V3 + by Subject). Always check if the verb has an object before trying to switch voices. Use passive voice when the result is more important than the person who did it!