This document discusses the use of prepositions of place in phrases. It explains that prepositions such as "at", "on", and "in" are used to indicate where something is located. Specific uses of each preposition are outlined, such as "at" indicating a specific place, "on" indicating position on a surface or street, and "in" indicating being enclosed or within a larger area. Examples are provided for each preposition. The document concludes with exercises for readers to practice using these prepositions of place correctly in sentences.