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Prepositions with assistant

assistant to, in, at, for or during?

Assistant is normally followed by to when it means a subordinate role. Other prepositions may introduce place, time, or organisation details rather than complete the adjective itself.

Quick answer

Which preposition goes with assistant?

The standard pattern is assistant to + person or position: assistant to the director. Phrases with in, at, for, or during usually add place, organisation, or time information rather than completing assistant itself.

assistant to the manager
assistant at the front desk
assistant for the research project

Choose the pattern by meaning

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

1
assistant to + person

Showing who the assistant supports

Use to to name the person or role receiving assistance.

She is an assistant to the editor.
He works as assistant to the CEO.
2
assistant at + place

Showing workplace or location

At introduces a place of work or activity, not the person assisted.

She is an assistant at the museum.
3
assistant for + project or purpose

Showing responsibility or assignment

For can introduce the area, task, or organisation connected to the role.

They hired an assistant for the marketing campaign.
4
assistant during + time

Showing when someone served in the role

During introduces a time period and is not the core complement of assistant.

He worked as an assistant during the summer.

See the difference in context

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

Construction
Example
Meaning
assistant to
She became assistant to the regional director.
Standard form for a subordinate role supporting a person or position.
assistant in
She worked as an assistant in the finance department.
In introduces a department or area, not the person assisted.
assistant at
He is an assistant at the clinic.
At refers to a workplace or location.
assistant for
They appointed an assistant for the new project.
For refers to a task, project, or purpose.
assistant during
He served as an assistant during the conference.
During adds a time period.

Common mistakes

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

Using in instead of to for a person

Use to when naming the person or role supported.

✕ assistant in the manager ✓ assistant to the manager

Using at for a supervisor

At normally introduces a place, not a person.

✕ assistant at the director ✓ assistant to the director

Treating during as the main complement

During only adds time information.

✕ She is assistant during the team. ✓ She is assistant to the team leader during the event.

Quick practice

Choose the expression that matches the intended meaning.

1. She works as an ___ the sales director.
2. He is an assistant ___ the university library.
3. They hired an assistant ___ the summer festival.

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Frequently asked questions

Is assistant to the manager correct?

Yes. Assistant to + person or position is the standard structure.

Can I say assistant at a company?

Yes. At can introduce the workplace or organisation.

Is assistant during natural English?

Only when during introduces a time period, such as during the summer.

abhorrent-to-in-for-of, about "ablaze with" or "ablaze in"? "able for" or "able in"? "abreast of" or "abreast with"? "absent from" or "absent in"? absolute in, for, of, to or as? "absurd to", "absurd in" or "absurd for"? abundant in, with, of, on or for? "abusive to", "abusive in" or "abusive towards"? "academic in" or "academic at"? "acceptable to" or "acceptable for"? accessible to, by, for, from or in?

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