This document discusses the use of prepositions of time and place in English. It provides examples of common prepositions used to indicate time, such as "at", "on", and "in" when referring to specific times, dates, days, months, or periods of the day. It also discusses prepositions used to indicate location, such as "in", "on", "under", "next to", "between", and gives picture examples to demonstrate their usage. The document aims to help English language learners understand when and how to correctly use different prepositions of time and place.