Tā / biǎo / miàn / hé / nǐ / yǒu / hǎo / , / bèi / dì / lǐ / què / zài / àn / suàn / nǐ / , / nǐ / yào / xiǎo / xīn / 。

他表面和你友好，背地里却在暗算你，你要小心。

He acts friendly to your face but is plotting against you behind your back, so be careful.