The word "behave" is correct and usable in written English. You can use the word "behave" to express the expectation or suggestion that someone should show good manners or follow certain rules or standards. For example, "Please remember to behave appropriately during this important business meeting.".
"You can't just ask people to behave ethically just like that".
Dogs in summer bit by gnats or fleas or gadflies, jerking their snouts about, twitching their paws now here, now there, behave no otherwise".
During rehearsals, he's careful to insist that, within the limits of period etiquette, his courtiers and peasants behave like real individuals, rather than ballet ciphers.
When they observe happy children with complex needs who appear to behave and look well treated, do inspectors whack out generous "outstanding" judgments as a way of rewarding the school for relieving society of its guilt about what to do with disabled children, rather than basing the grading on whether students are being fully extended to learn?
She's made this screamingly mean movie to try to show people how not to behave.
With the stage managers now making exaggerated gestures at him, he added: "This is one of the moments when you are not responsible... when you behave like crazy.
The Washington Post was similarly emphatic in its own editorial, following graphic details of treatment meted out to detainees in CIA custody with a clear: "This is not how Americans should behave.
Being a terminologist, I care about word choice. Ludwig simply helps me pick the best words for any translation. Five stars!
Maria Pia Montoro
Terminologist and Q/A Analyst @ Translation Centre for the Bodies of the European Union