Uncountable nouns
Hello ! I don't understand a notion in my english book.

To give an example of uncountable nouns, they utilize this :
"Make sure you don't get a piece of glass in your foot"
But why "piece of glass" is an uncountable nouns ? I can say One piece of glass, Two piece of glass etc ...

And why me don't say "Make sure that you don't"

Pouvez-vous me répondre en français ?

Question

Uncountable nouns
Hello ! I don't understand a notion in my english book.

To give an example of uncountable nouns, they utilize this :
"Make sure you don't get a piece of glass in your foot"
But why "piece of glass" is an uncountable nouns ? I can say One piece of glass, Two piece of glass etc ...

And why me don't say "Make sure that you don't"

Pouvez-vous me répondre en français ?

Answer

C'est tout a fait évident qu'on peut dire 'one piece of glass' ou 'two pieces of glass'. A 'piece of glass' c'est un morceau de verre, et on peut compter des morceaux.

C'est le mot 'glass' (du verre) qui est indénombrable.