This document discusses prepositions and provides examples of their usage. It covers prepositions that indicate spatial relationships like "over", "above", "below"; direction like "across", "along", "by"; time like "before", "after", "during"; and other relationships like "by", "with", "in", "of". It also gives examples of prepositions combined with nouns, adjectives and verbs like "in a hurry", "angry about", "good at", to form idiomatic phrases. The document is intended to serve as a reference for understanding and using prepositions correctly in the English language.