pass (someone or something) off as (someone or something)orpass off (someone or something) as (someone or something):to cause people to wrongly believe that someone or something is someone or something else使人误认为;冒充
amateurs passing themselves off as professionals冒充专业人士的业余爱好者
He managed to pass himself off as the son of the famous actor.他设法冒充成这位知名演员的儿子!
She passed the poem off as her own.她把这首诗说成是她写的。
They tried to pass it off as an original painting, but I suspected it was a copy.他们极力把这幅画说成是原作,但我怀疑是复制品。
a cheap piece of glass passed off as a diamond一块冒充钻石的廉价玻璃
2
British:to happen or take place in a particular way发生;进行
The event passed off [=went off] with no major incidents.事情过去了,没发生什么大的变故。