Have you ever acted in a play before?
Andrew Pike was chosen to act the part of the lawyer in the film.
We are taught how to act in both comic and serious parts. (Preliminary English Test; B1; Italian)
He acted as if he'd never met me before.
Don't be so silly - you're acting like a child!
I always care about how much money I have and I always act sensibly. (Preliminary English Test; B1; Farsi)
She acted without thinking.
We have to act now to stop the spread of this disease.
We can make the village much more attractive than it has ever been. If we act together as a group, things will be easier. (First Certificate in English; B2; Portuguese)
He was asked to act as an advisor on the project.
In the last race held by Nostred Motor Klub, I [saw] that you were short of officials. Now I think I can act as [an] official in your club. (First Certificate in English; B2; Danish)
Her character doesn't appear until Act 2.
Everything was going all right, until we reached the "balcony act". (First Certificate in English; B2; Spanish)
an act of aggression/kindness/terrorism
a kind/thoughtless/selfish act
The simple act of telling someone about a problem can help.
I think that reading is a[n] act of intel[l]igence because animals can't read, while watching T.V. is only an act of having fun!!! (First Certificate in English; B2; Portuguese)
Was she really upset or was that just an act?
Sometimes what is put on display for the tourists is all an act and gives you a different impression and opinion of the country and people, so it would be advisable to meet some local people like the butcher or baker and have a talk with them. (Certificate of Proficiency in English; C2; German)
She's so disorganized - I wish she'd get her act together.
He was determined to get his act together and try to find a solution to his problem. (Certificate of Proficiency in English; C2; Spanish)