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Prepositions with nouns

“Of officer”, “by officer” or “for officer”?

By officer and for officer can be natural in specific contexts. Of officer is uncommon without an article or modifier.

Quick answer

How do these combinations work?

Use by an officer to identify the person performing an action: checked by an officer. Use for an officer to show purpose or suitability: accommodation for officers. The phrase of officer is generally incomplete in standard English and usually becomes of an officer or of the officer.

All bags were inspected by an officer at the entrance.
The building includes housing for officers.
The responsibilities of the officer are listed in the report.

Choose the pattern by meaning

These forms are not interchangeable. Choose the construction by meaning, not by which preposition appears most often.

1
by an officer

Agent performing an action

Use by an officer after passive verbs to show who did something.

The vehicle was stopped by an officer.
The documents were signed by an officer on duty.
2
for officers

Purpose or intended users

Use for officers when something is designed or reserved for officers.

The course was created for officers in training.
There is separate parking for officers.
3
of the officer

Possession or relationship

Use of the officer to describe something connected to a specific officer.

The badge of the officer was clearly visible.
We reviewed the statement of the officer involved in the case.

See the difference in context

The same subject can take different constructions because each sentence answers a different question.

Construction
Example
Meaning
by an officer
The passenger was questioned by an officer.
Shows who performed the action.
for officers
The manual is intended for officers.
Shows purpose or intended users.
of the officer
The report included the name of the officer.
Shows relationship or possession.
of officer
Of officer is generally incomplete in standard English.
Usually needs an article or modifier.

Common mistakes

Some combinations appear in real text but do not mean what learners often assume.

Using of officer without an article

Officer is a countable noun and usually needs a determiner here.

✕ the badge of officer ✓ the badge of the officer

Using by officer without an article in ordinary singular contexts

Singular officer normally needs an article.

✕ The car was checked by officer. ✓ The car was checked by an officer.

Quick practice

Choose the expression that matches the intended meaning.

1. The package was inspected ___ an officer.
2. The training programme is designed ___ officers.
3. Which phrase is usually incomplete in standard English?

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Frequently asked questions

Can by officer ever be correct without an article?

It may appear in headlines or very compressed notes, but standard sentences usually use by an officer.

What does for officers mean?

It means intended for officers or benefiting officers.

Why is of officer uncommon?

Officer is a countable noun, so English usually requires a determiner such as a, an, or the in this structure.

of, about, against, to or for racism? of, about, for, in or on friendship? of, about, for, on or to thing? of, about, for, to or with sex? of, about, on, to or for moon? "of access" or "with access"? "of accommodation" or "for accommodation"? "of accuracy" or "for accuracy"? "of action" or "in action"? "of actor", "with actor" or "by actor"? "of address" or "to address"? "of administration" or "in administration"?

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