1. The cheap juice was packaged in champagne bottles and was being passed off as high end champagne.2. The novel is such a joke. I can't believe anyone would pass this nonsense off as literature. It belongs in the trash.3. The boy copied his buddy's homework and passed it off as his own. The teacher saw right through it.4. The antique seller was trying to pass off fakes as antiques.
to pass off A as B拿A假冒B = 拿A冒充B = 把A當作B = to pass off A as Bto pass off A as B 是標準的英文詞句。