Prepositions after verbs

How to use “pursue” with prepositions

Pursue usually takes a direct object: pursue a goal, pursue a career, pursue legal action. “Pursue by” is uncommon as a direct combination, while “pursue in” appears mainly when “in” introduces an area or activity.

Quick answer

Is it “pursue by” or “pursue in”?

Standard English usually uses pursue with a direct object, not with “by” or “in” directly after the verb. “Pursue in” can appear when “in” introduces a field or activity, such as “pursue opportunities in science.” “By” is more often part of a separate phrase explaining method or agent.

pursue a degree in engineering
The company decided to pursue legal action
She wants to pursue a career in medicine
The suspect was pursued by the police

Choose the pattern by meaning

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

1
pursue + goal/object

Talking about aims or activities

Use pursue directly with the thing you want, continue, or try to achieve.

pursue new opportunities
They plan to pursue further studies
2
pursue + object + in + field

Naming an area or field

Use “in” after the object to show the field, industry, or subject area.

He decided to pursue a career in finance
She hopes to pursue research in climate science
3
pursued by + agent

Showing who is chasing someone

In passive structures, “by” introduces the agent performing the action.

The thief was pursued by security guards
The animal was pursued by hunters

See the difference in context

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

Construction
Example
Meaning
pursue + object
She wants to pursue a doctorate.
Standard structure for goals, studies, or actions.
pursue + object + in + field
They pursued careers in technology.
Standard use when naming a field or area.
pursue by
The policy was pursued by several governments.
Possible only when “pursued” is passive and “by” introduces the agent.
pursue in
He pursued opportunities in Asia.
“In” usually introduces location, field, or context rather than completing the verb itself.

Common mistakes

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

Using “pursue by” as a normal active pattern

English normally uses a direct object after pursue.

✕ She pursued by new methods. ✓ She pursued new methods.

Adding “in” directly after pursue without an object

Use an object before “in” when naming a field or context.

✕ He pursued in science. ✓ He pursued a career in science.

Confusing passive and active forms

Use “pursued by” only when the subject receives the action.

✕ The police pursued by the suspect. ✓ The suspect was pursued by the police.

Quick practice

Choose the expression that matches the intended meaning.

1. She plans to ___ a career in law.
2. The escaped prisoner was ___ the police.
3. They decided to pursue research ___ renewable energy.

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Frequently asked questions

Can “pursue” be followed directly by “in”?

Usually an object comes first: pursue a career in medicine, pursue research in biology.

Is “pursue by” correct?

It is uncommon as an active verb pattern. It mainly appears in passive structures such as “was pursued by the police.”

Do I always need a direct object after “pursue”?

In most cases, yes. English commonly uses pursue with a goal, activity, career, or action.

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