35How to make the /f/ sound(labiodental fricative)The top teeth cover the bottom lip. Air is expelled overthe tongue. The stream of air hits thebackof the topteeth and is directed down over the bottom lip. The airescapes out of the small gap between the top teeth andthe bottom lip. The /f/ is aquiet, stream of air sound.Note: the velum closes off the nasal cavityThe /f/ soundis a continuous stream of air sound. It has a single side view picture because the oralcavity has only a single movement for /f/ production.