The document discusses the passive voice in English grammar. It provides examples of changing sentences from the active to passive voice by making the subject of the active sentence the object of the passive sentence. The tense of the verb "to be" changes depending on the tense of the original sentence, such as "is" for present simple and "was" for past simple. Several examples are given of changing between active and passive voice sentences.

1. Passive Voice
By: Israel Caballero Yébenes

3. To be (in original sentence verb tense)
Verb (participio)
Present simple The pizza is eaten by the children.
Past simple The pizza was eaten by the children.
Present perfect The pizza have been eaten by the children.
Past perfect simple The pizza had been eaten by the children.
Future -The pizza will be eaten by the children.
-The pizza is going to be eaten by the children
-Modal: The pizza Can/must/should be eaten by
the children.

4. The subject of the senten becomes the object in the passive
sentence, and the object becomes the subject of the passive
sentence.
Rebeca opens the windows
The Windows are opened by
her/Reneca

5. The chidren eat the pizza.(active)
The pizza is eaten by the children.(passive)
Rebeca opened the Windows.(active)
The Windows was opened by her/Reneca(passive)
Lady Gaga has signed many atographs.(active)
Many autographs have been signed by Lady Gaga-(passive)
He had played the guitar for a long time in same band.(active)
The guitar had been played by him for a long time in same band.(passive)
The team will celebrate their victory tomorrow.(active)
The victory will be celebrated by the team tomorrow. (passive)