ENGLISH
REFERENCE

act as sth

phr. v..
B2 Upper Intermediate Oxford

phr. v.. to do a particular job or have a specific purpose for a short time.

phr. v.. to perform the function of a specified role or object; often used when the subject is not primarily designed for that purpose.


SIMPLE

This sofa can act as a bed for guests.

CONTEXTUAL

During the meeting, the vice president had to act as chairman because the boss was ill.

COMPLEX

The local library often acts as a community hub where residents can access essential social services and educational resources.

Particles
as
Separability
inseparable
Pattern
act + as + object
Usage

usually followed by a noun phrase describing a role, function, or profession.

Teaching tip

contrast with 'serve as' which is more formal; 'act as' often implies a temporary or substitute role rather than a permanent one.

Pitfall

He acts as of the manager.He acts as the manager.the preposition 'as' is followed directly by the noun phrase without 'of'.

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