This lesson focuses on the “th” sound. It will include 2 variations of the sound, the voiceless th and the voiced th. The th sound is often a tricky sound for people learning English as a second language because it is not a sound that is produced in some other languages. Most times, people will substitute the /t/ for the voiceless th and the /d/ for the voiced th. Add the TH sound to your cart for more help with pronouncing this sound.