2. Grammatical Rules
The passive voice is formed with the auxiliary verb "to be" and the past participle of the verb.
Examples:
The speech is written for the president.
The room will be cleaned while we are out.
Subject + auxiliary verb (to be) + past participle ..
3. To transform an active sentence into a passive
one, we consider the following points:
1. The object of active prayer becomes the subject of the passive.
2. The main verb is replaced by the auxiliary "to be", in its same time, next to the main verb in
participle.
3. The subject of the main sentence becomes the agent complement of the passive.
4. If we make mention in the sentence of the subject that performs the action (agent subject),
this will normally be preceded by the preposition "by".
Examples:
Mark Twain wrote the book.
The room will be cleaned by the housekeeper.
4. Uses
1. We use the passive voice when we do not know who has performed the action.
Examples:
A civilian has been killed.
The car was stolen.
2. Usamos la voz pasiva cuando queremos dar más importancia a lo que pasó, que a quién realizó
la acción o cuando no queremos decir quien la realizó.
Examples:
The letter was delivered yesterday.
A mistake was made.
