III. Passive, to be concerned.
This occurs in some senses which are non-existent or obsolete in the active; in other senses it is much more used than the active.
Are there passives without a corresponding active?
III. Passive, to be concerned.
This occurs in some senses which are non-existent or obsolete in the active; in other senses it is much more used than the active.
Are there passives without a corresponding active?
It's the normal grammatical definition of the passive voice, in which the object of a transitive verb is made into the subject.
For example, if a sentence in the active is:
I gave my roommate a ride,
the passive would be
My roommate was given a ride by me.
To see what the OED is talking about in that some of the meanings of concern are only used in the passive, one of the meanings for which the active of concern is not used is
- a. To be in a relation of practical connexion with; to have to do with; to have a part or share in; to be engaged in, with:
1875 Jowett Plato Music is concerned with harmony and rhythm.
This sentence sounds fine, but if you put this in the active you get:
Harmony and rhythm concern music,
which sounds really wrong.
Are there passives without a corresponding active?
There might be. It is difficult to find completely clear examples. Sometimes, the word actually has been used (rarely) in the active voice; sometimes, its unclear whether a form that looks like a past participle is being used in a "verbal" participle construction, or merely a "departicipial" adjective. (The analysis of the distinction between verbal participles and departicipial adjectives is also disputed and can be unclear in some situations.)
Some potential candidates for passive expressions without corresponding active forms in use, aside from the mentioned use of to be concerned, are to be born, to be rumored, and to be reputed (the last two are mentioned in "A corpus study of some rare English verbs", by Laurie Bauer).
I discuss "rumored" in the linked post.
Active is something you do - e.g. I flew the aircraft.
Passive is something done to you - e.g. I was flown by the airline to my destination.