PREPOSITION

          A preposition links nouns, pronouns and phrases to other words in a sentence.The relationships include direction, place, time, cause, manner and amount.  The preposition is almost always before the noun or pronoun and that is why it is called a preposition.

• Preposition of time(before, around, at, during)
  example: She was caught cheating during the exam. 
• Preposition of place(in, on, at, to)
  example: Umiey has lived in Australia for three years. 
•  Preposition of position(above, across, against, along)
  example: The boys ran across the road even though there was heavy traffic. 
•  Preposition of manner(at, with, by)
  example: He is good at learning foreign languages.