If the "s" is silent, how do you tell when a noun is plural in french?
Is it just context?
Pay attention to the article that precedes it.
Le garçon (luh gehr-sohn)
Les garçons (leh gehr-sohn)
In reading, it's easy to see. In speaking, you must pay attention to the context and hear the difference between the articles "le" & "les". "Le" is very light pronounce, like just reading the L from "let." And "les" is longer, almost as long as "Leigh", but pronounce it like you says "let". It's hard to explain if you don't have a teacher to teach you the pronounciation face to face. Also, listen for the verb that comes after. "Le garçon est sympa. Les garçon SONT sympas." J'èspere que tu comprends.