How to use the verb act?
How to use the verb act?Could I say "act the princess" or "act as the princess"?
Is there any differences?
Could I say "we act the paly"?

Question

How to use the verb act?
How to use the verb act?Could I say "act the princess" or "act as the princess"? 
Is there any differences?
Could I say "we act the paly"?

Answer

http://www.thefreedictionary.com/act

No, seriously.

To answer your questions quickly, use "act the princess" (you'll see the reason in the link I posted) and "act out the play".