这个人不老实，小心别上当。

Zhège rén bù lǎoshi, xiǎoxīn bié shàngdàng.

This person isn't honest, be careful not to be duped.

她说的话听起来挺真实的，我差一点上当。

Tā shuō de huà tīng qǐlái tǐng zhēnshí de, wǒ chà yìdiǎn shàngdàng.

Her words sounded so honest, I was almost taken in by her deceit.

我被骗了，上当受骗了。

Wǒ bèi piànle, shàngdàng shòupiànle.

I was deceived and fell for it.