here you can read about countable and uncountable nouns.

1. COUNTABLE AND
UNCOUNTABLE NOUNS
BY : M A R Í A F E R N A N D A L Ó P E Z A M O R
S A N D Y C R I S T E L L G Ó M E Z G A R C Í A

2. OBJECTIVE
The purpose is that students can learn about the countable and uncountable
names and what their use.

3. The countable nouns are those elements that can be counted one by one
using the numbers.
The uncountable nouns are those elements that we cannot count using
numbers but it is possible when we use quantifiers or partitives.
How can I use the countable and uncountable nouns?
The names accounting have form of singular and plural. When we refer to the
names of accounting in the singular, these can be preceded by the indefinite
article a/an.
 I need an unbrella
 This is a parrot

4. The uncountable names only have the shape of a singular, usually do not carry
articles but sometimes can be accompanied by some/any.
 I need milk
 I can give you some advice
If we want to express a specific amount of an uncountable element we will add a
group of words that dilive the whole in parts that can be counted followed by
the preposition of:

5. A bag of: A slice of:
Flour Bread
Pasta Meat
Rice Cheese

6. Some of these partitives also can apply themselves for countable names like:
A can of pineapple A bag of crisps

7. REFERENCE
Lewo, L. (September 28, 2017). countable and uncountable. November 20,
2018, de Lewolang Sitio web: https://www.lewolang.com/gramatica-
inglesa/33/countable-and-uncountable