put on an act：裝模作樣、裝腔作勢。
She put on an act of being busy
working to shy away from me.
她裝出一副忙於工作的樣子避開我。
You should keep your eyes on
your homework，rather than put on an act.
你應該認真做作業，而不是裝模作樣。
Nancy put on an act, pretending
she did not care about me in the
least.
南希裝腔作勢，裝出她一點也不把我放在心上的樣子。
She is just putting on an act，I
don't buy it.
她只是裝腔作勢，我不吃這一套。