Active sentences are about what people (or things) do, while passive sentences are about what happens to people (or things). The passive voice is formed by using a form of the auxiliary verb “be” (be, am, is, are, was, were, being, been) followed by the past participle of the main verb.

​What is active-passive

Formula

Tense of Active-Passive

The lion was killed by the hunter.

​Passive

The hunter killed the lion.

Active

Example

The windows have been cleaned.

Passive

Someone has cleaned the windows.

​Active

Example