1. "sh" sound: This is the most common sound for "ch" in French, as in:
* Chaise: chair
* Chanson: song
* Cheval: horse
* Chocolat: chocolate
* Chouchou: favourite
2. "k" sound: This sound is present in words of Greek origin:
* Chaos: chaos
* Chronique: chronicle
* Chimie: chemistry
* Choc: shock
3. "s" sound: This is less common, but can occur in some words:
* Chasse: hunting
* Chœur: choir
4. "k" followed by a "y" sound: This is only in a few words:
* Char (pronounced "shar"): a type of wagon
* Châtel: (pronounced "shatel") castle
It's important to remember that pronunciation in French can be tricky. It's always best to consult a dictionary or pronunciation guide for specific words.