The phrase "act unusually" is correct and usable in written English.
It can be used to describe behavior that deviates from the norm or expected conduct.
Example: "During the meeting, she began to act unusually, raising concerns among her colleagues."
Alternatives: "behave oddly" or "conduct oneself strangely."
They consistently used the appropriate "experiment" to test their object, and babies who hadn't seen them act unusually hardly ever used these "tests" while playing.
Whenever you are talking with someone, don't act unusually or bring up the topic.
Autistic individuals deal with barriers and stressors that neurotypicals never face, Autistic individuals deal with barriers and stressors that neurotypicals never face, so they may act unusually or exhibit different social skills.
No one said anything, or acted unusually.
It's possible, of course, that AMC (who acted, unusually as both distributor and exhibitor) made a prudent market call, and Lost in Thailand's humour is simply too Chinese to gain wider sway.
McDonald's directors acted unusually quickly in naming Mr. Bell, unlike the board of the Coca-Cola Company, which has still not named a successor to its retiring chairman and chief executive after a two-month executive search.
However, this time, the government acted unusually quickly to ban bird sales.
Acting unusually agitated or frantic, pawing at its mouth, and whimpering.
If he acted unusually then (sudden eye pupil dilation, strange communication, etc), and still acts that way now, he may still like you- but doesn't know how to tell you or doesn't want you to know, for various reasons (such as internalized homophobia).
Unusually perceptive for Hayden.
But a strange, flailing campaign by the Republican National Committee to demand a Democratic fix for the Affordable Care Act goes unusually far in misrepresenting what the opposition party is doing or saying.
