Prepositions after verbs

Trap in, by, between, under or inside?

Trap often combines with in to show enclosure. Other prepositions describe the cause or exact position of the trapped person or object.

Quick answer

Use different prepositions for different situations

Use trap in or trap inside for enclosed spaces. Use trap under or trap between for physical positions. Use trap by for the cause of the situation.

The workers were trapped in the tunnel.
She was trapped under the fallen beam.
The animal was trapped between two fences.

Choose the pattern by meaning

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

1
trap in + enclosed place

Showing enclosure

In is the most common choice for someone unable to escape from a place.

The hikers were trapped in the cabin by snow.
Smoke trapped the family in the apartment.
2
trap inside + enclosed place

Emphasising being inside

Inside adds emphasis to the interior position and is similar to in.

Several passengers were trapped inside the bus.
The cat became trapped inside the garage.
3
trap under + object

Showing pressure from above

Under is used when something heavy covers or pins a person or object.

A driver was trapped under the vehicle.
The climber was trapped under rocks.
4
trap between + two things

Showing position between objects

Between introduces two sides or barriers.

His hand was trapped between the doors.
The boat became trapped between ice sheets.
5
trap by + cause

Showing what caused the situation

By introduces the thing causing someone to become trapped.

The village was trapped by floodwater.
They were trapped by heavy traffic.

See the difference in context

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

Construction
Example
Meaning
trap in
The miners were trapped in the shaft.
Standard form for enclosure.
trap inside
The child was trapped inside the car.
Adds emphasis to the interior position.
trap under
He was trapped under debris.
Shows something pressing from above.
trap between
The cable was trapped between the panels.
Shows position between two objects.
trap by
Residents were trapped by snow.
Shows the cause of being unable to escape.

Common mistakes

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

Using by for location

By usually introduces the cause, not the place.

✕ They were trapped by the basement. ✓ They were trapped in the basement.

Confusing in and under

Under is needed when something covers or pins the person.

✕ The worker was trapped in concrete blocks. ✓ The worker was trapped under concrete blocks.

Using between with more than two clear sides

Between usually refers to two objects or limits.

✕ The hikers were trapped between the forest. ✓ The hikers were trapped in the forest.

Quick practice

Choose the expression that matches the intended meaning.

1. The passengers were trapped ___ the elevator.
2. The cyclist was trapped ___ the truck.
3. The road was blocked, and drivers were trapped ___ snow.

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Frequently asked questions

Is trap inside more emphatic than trap in?

Yes. Inside stresses that someone or something is within an enclosed space.

Can trap be used figuratively?

Yes. People can be trapped in debt, trapped by rules, or trapped between choices.

Which preposition is most common with trap?

In is the most common for physical and figurative enclosure.

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