However, prepositions are easy to confuse and misuse. The same preposition can often be used in different ways, and the meaning can only be deduced from the context. Dangerous chemicals should be used behind the safety screen. Every team member is behind the proposed changes. The company is behind its competitors in terms of total revenue. Furthermore, the choice of preposition can change the meaning of a sentence, so it’s important to use the right one. The following examples show the ... Prepositions are parts of speech that show relationships between words in a sentence . In “the book on the table,” the preposition on shows the relationship between the book and the table. A preposition is a word that shows the relationship between a noun or pronoun and other words in a sentence. Learning prepositions in English grammar is essential for clear communication and success in school and competitive exams. This topic explains types, lists, examples, and usage tips for mastering prepositions . What is a Preposition ? What is a Preposition? A preposition is a word that shows the relationship between a noun or pronoun and other parts of a sentence . It tells us where something is, when something happens, or how things are related. Common prepositions include words like "in," "on," "at," "under," and "with."