The document provides an introduction to the passive voice, including when and how it is used. It notes that the passive voice is used when the action is more important than the person performing it, the person is unknown, or the person performing it is obvious or unimportant. It explains that the passive voice uses some form of "to be" plus the past participle of the main verb, and that "by" can be used to specify who performed the action. Examples are given of converting sentences from active to passive voice and vice versa. The tenses of the passive voice, including present, past and future, are outlined by using forms of "to be" plus the past participle.

1. Introduction to the
Passive Voice
Present, past and future

2. The Passive Voice: Form and Uses
When:
 The action is more important than the person who performs it.
 We don’t know who performed the action.
 It is not important to say who performed the action.
 It is obvious who performed the action.
How:
Subject + verb “to be” + Past participle
The concert + was + cancelled
But:
•If we want to say who performed the action, we have to
use the preposition BY.
For example:
Subject + verb “to be” + Past participle
The concert + was + cancelled by the band

3. Active / Passive
The subject does something Something happens to the subject
The writer writes a book A book is written by the writer

4. An active sentence can become a passive sentence
A passive sentence can become an active sentence

5. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums

6. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive:

7. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive:

8. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive: All your albums

9. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive: All your albums

10. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive: All your albums are bought

11. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive: All your albums are bought

12. An active sentence can become a passive sentence
A passive sentence can become an active sentence
Active: Peter buys all your albums
Passive: All your albums are bought by Peter

13. Present, past and future passive forms
The correct form of the verb “to Be” + the past participle of the main verb
Active Passive
Present This boy produces wine Wine is produced by this boy
Past This boy produced wine Wine was produced by this boy
Future This boy will produce wine Wine will be produced by this boy

14. The End