A, An, The or No Article

  We use a or an before:

 -a singular countable noun

  a word


   
  We use a before:

  -a noun starts with a consonant

   a sentence



   We use an before:

  -a noun starts with a vowel

   an example


  We don't use a or an before:

  -a plural countable noun

  words

  -an uncountable noun

  information


      Examples

1. I often use slang words for money. (no article)                                                                                   
2. In a cinema, there is usually a sign for the exit.                                                                                
3. I check my email an internet cafe.                                                                                                    
4. There are many foreign words in English to describe food. (no article)