This document lists common prepositions such as about, above, across, after, against, along, among, and provides examples of how prepositions are typically used before nouns to indicate spatial, temporal, or logical relationships within sentences. For instance, prepositions show if something is on, beside, during something else. Prepositions locate nouns in space or time, like showing if a book is on or beside a table, or if something was read during class.