This document discusses prepositions of location and time in Indonesian. It provides 14 examples of prepositions of location - in, at, on, across, around, between, among, throughout, over/above, under/beneath, below, behind, in front of/before, and next to/beside - and explains their meanings. It also lists 9 prepositions of time - at, in, on, by, before, after, since, for, and during - and gives examples of how each is used. The document is a reference for common Indonesian prepositions and their usage for location and time.