In order to understand what passive voice is, we have to first understand what active voice is.
In
active voice statements we find that a subject performing something, look at
the following examples:
- The kids play in the backyard.
- Susana is watching tv in the living-room.
- Marc studied music in his hometown.
- The students will take a test next week.
- Mr. Jones has seen that movie three times
In all the examples above we can see that
the subject is the one that performs that action of the verb. This can also be
done by asking the question “who…?” to the verb. When the someone performs the
action of the verb, we say then that our statement is active.
- Brenda goes to school by bus. (Who goes to school by bus? Brenda)
In the passive voice the subject does not
perform the action of the verb. Look at the following example.
- The lab is painted two times a year.
If we ask the question “who…” in order to
find who performs, the action of the verb we will not find and answer to this
question
- Spanish is spoken at this office. (Who speaks Spanish at tis office? There is no answer)
Now let’s take a look at the structure of
both the active and the passive voice.
Active Voice:
Subject/Pronoun
+ Auxiliary* + Verb + complement
Passive Voice:
Subject/Pronoun +Auxiliary * + be + Participle + complement + agent/doer
*Simple present and simple past have no
auxiliary in their affirmative structure. This is very important to remember when we will make the change from active voice to the passive voice.
For a sentence to
be changed to the passive voice, its verb needs to perform something. We can
call it the action of the verb or the direct object. This can be done by either
asking the questions “what or who” to the main verb of the sentence. If any of
these two questions can’t be answers then the sentence cannot be change to the
passive form.
e.g.:
The
kids are playing cheerfully
in the backyard. (What are the kids playing?)
This sentence can’t
be changed to the passive because the verb does not perform anything.
The kids are playing baseball cheerfully in the park. (What are the kids playing?)
This sentence can be changed to the passive voice because the verb performs an action (it has an object).
When we make the
change from active to passive the action of the verb will become the subject of
the passive voice.
In the example above
both sentences are in the present progressive form.
In the above
sentence (simple present) we have no auxiliary in the affirmative form. In this
sentence the doer can be omitted since it is not necessary. The important fact
is that Spanish is studied, not who performs the action.
Spanish is studied at a language school .
The same happens for the simple past tense.
Look at the following example:
Here you have a list of passive forms of
most common structures.