[SP/Grammer] Articles (1)

A/An & The

• The definite article : The
  • when the listener/reader knows which thing we mean (it may have been mentioned before)
  • when there is only one of this thing
    : the Earth, the sun, the twentieth century, the sixties, the Government, the Prime Minister
  • for superlatives
  • talk about playing a musical instrument
  • with certain proper nouns
    : nationalites, rivers, island groups, mountain ranges, seas and oceans country names that represent a group, many famous/historical buildings, noun phrases with of
  • with university names
    
• The indefinite article : A/An
  • refer to something for the first time
  • refer to any one from a group of several
  • classify people or things as belonging to a group
  • say what job somebody does

Post-Modification

: expressions or structures that we use after a noun in order to modify it

e.g. relative clauses, prepositional phrases, adjective clauses, participle clauses, etc.