Did you really think you could pass this off as you?你真以為能用它冒充

to pretend that something is a particular thing when it is not
pass off 發(fā)生，進行，舉行。to happen
【例句】
It's hard to believe anyone would try to pass this nonsense off as literature.
很難相信有什么人會試圖把這種毫無意義的文章當作文學。
The pop festival passed off peacefully, despite the fears of local residents.
盡管當?shù)鼐用駪n懼擔心，流行音樂節(jié)還是平安順利地舉行了。