A form of a sentece where the most important thing or person becomes the subject

To emphasize the action (verb) and the object rather than subject

When we do not know nor want to express who performs the action

noun + be + past participle

you can use + by + who does the action

https://www.youtube.com/watch?v=W1_IRU6zx9g

https://www.macmillandictionary.com/

simple past

past continuos

past perfect

future

past future

future perfect

simple present

present continuos

present perfect