他轻信了陌生人的承诺,结果上当了。Tā qīngxìn le mòshēngrén de chéngnuò, jiéguǒ shàngdàng le.He trusted a stranger's promise too easily and ended up being cheated.
别相信那个广告,小心上当。Bié xiāngxìn nàge guǎnggào, xiǎoxīn shàngdàng.Don't believe that ad; be careful not to be fooled.
她第一次上网买东西就上当了,东西和图片完全不一样。Tā dì yī cì shàngwǎng mǎi dōngxi jiù shàngdàng le, dōngxi hé túpiàn wánquán bù yīyàng.The first time she shopped online she got tricked: the item looked nothing like the picture.