Fun with Singulars and Plurals

Sprout is really into eating cheese these days. "Mummy, want cheese." "Mummy, want eat cheese."

Yesterday, I gave him yet another small piece of cheddar. He held it up and said, "Dat's a chee." "No," I said, "That's cheese."

I can't imagine trying to learn a language like English, where there are words like "keys" and "key", but "cheese" and "piece of cheese". Not to mention "cheeses".