裝模做樣, 做作 - 每日一辭(英)
put on an act = to pretend, especially to deceive or to show off.
put on airs = to pretend to be superior
pretentious = to make an exaggerated outward show
Stop putting on act. You will never be a nobleman.
She always puts on airs pretending to be naïve and innocent.
It is a torture for me to see him in his pretentious self.
Written by Elisa English