To pronounce the "th" sound in English, follow these steps:

1. Place the tip of your tongue gently behind the top front teeth.
2. The air should come out in between the tongue tip and the top teeth.
3. There are two "th" sounds: voiced /ð/ and voiceless /θ/.
4. For voiced "th," the vocal cords vibrate.
5. For voiceless "th," the airflow is continuous. ^{speechactive.com 1 2 3 4}