The life

Rules:

1. Adjectives are invariable: They do not change their form depending on the gender or number of the noun.  A hot potato  Some hot potatoes
2.   To emphasise or strengthen the meaning of an adjective use 'very' or 'really': A very hot potato Some really hot potatoes.
   
    Adverbs modify, or tell us more about other words, usually verbs:

   Examples

   • The bus moved slowly.
   • The bears ate greedily.
    Sometimes they tell us more about adjectives:

   Examples

   •  You look absolutely fabulous!
   They can also modify other adverbs:

   Examples

   • She played the violin extremely well.
   • You're speaking too quietly.

   Position of adjectives

   a) Usually in front of a noun: A beautiful girl.
   b) After verbs like "to be", "to seem" , "to look", "to taste":
   

   Examples

   • The girl is beautiful
   • You look tired
   • This meat tastes funny. 

   c)  After the noun: in some fixed expressions:
   

   Examples

   • The Princess Royal
   • The President elect
   • a court martial
   d) After the noun with the adjectives involved, present, concerned:
   

   Examples

   1. I want to see the people involved/concerned (= the people who have something to do with the matter)
   2. Here is a list of the people present (= the people who were in the building or at the meeting)

   
   Be careful! When these adjectives are used before the noun they have a different meaning:
   

   • An involved discussion = detailed, complex
   • A concerned father = worried, anxious
   • The present situation = current, happening now

   you can see at the  english grammar