UNCOUNTABLE NOUNS

 We noticed that countable nouns are items (floor , ceiling , door , window , and so on ). By contrast , uncountable nouns , cannot be regarded as items .
Uncountable nouns are typically nouns that do not form plurals. They can be divided into two main types: concrete uncountable nouns and abstract uncountable nouns.
1  ) Concrete uncountable nouns
   Concrete uncountable nouns represent types of food or material ; here are some examples :
    air  , bread , cheese, grass , dust , ink rain , scenery, water  
It is quite helpful to think of these kinds of material and food as mass nouns. Some grammarians actually use the term mass nouns for all countable nouns .
2 ) Abstract uncountable nouns
Abstract uncountable nouns represent qualities or concepts , for example :
 advice , anger , harm , haste , glory sleep , luck , lust etc.
As a general rule , you do not use a | an with uncountable  nouns. You do not say , for example , a milk or an anger.
Nor , again as a general rule, do you make uncountable nouns plural. you do not say , for example, happinesses or rices.
How uncountable nouns are used
1 ) Uncountable nouns are used in general statements :
   * I don' t like cheese.
2 ) They can be used with some in specific situation ; some takes the place of the a | an you use with countable nouns:
* There is some cheese in the fridge and a knife on the table .
3 ) They can be used with the when it is clear what you are referring to :
* Put the cheese back in the fridge.
4 ) They can be used with other determiners , quantity words and possessive forms :
* That cheese is quite delicious !
* I do not eat much cheese .
* My hair needs a wash .
*Granddad 's health is deteriorating.