be, practise as ~
to practise as a consulting engineer
act as ~
She is acting as architect on this project.
The group does not have an internal auditor.
We need an engineer to design us something better.
It pays to find a good accountant.
appoint, appoint sb (as), engage, get, instruct ~
Appoint a solictor to act on your behalf.
consult (with), get/take advice from, go to, see, speak to, talk to ~
I demand to speak to my lawyer!
an advocate, barrister, lawyer, solicitor
acts for/defends/represents sb
an in-house lawyer acting for a major company
advise sb/sth ~
His accountant has advised him to close down his business.