nǐ / zhèyàng / dāngzhòng / jiēchuān / tā / de / huǎngyán / bùshì / ràng / tā / xiàbùláitái / ma

你这样当众揭穿他的谎言，不是让他下不来台吗？

Aren't you putting him on the spot by exposing his lie in public?