The document provides instruction on the proper use of articles in English. It discusses the three articles - "a", "an", and "the" - and explains that "a" and "an" are indefinite articles while "the" is a definite article. The key points covered include:
1) "A" is used before nouns starting with consonant sounds, "an" is used before nouns starting with vowel sounds.
2) "The" is used to refer to specific or particular nouns that are already known.
3) Examples are provided to illustrate the correct usage of each article in different contexts.
4) Exceptions where articles are not needed with certain nou