Question

what is preposition ???​

Answer 1

Prepositions and postpositions, together called adpositions, are a class of words used to express spatial or temporal relations or mark various semantic roles. A preposition or postposition typically combines with a noun phrase, this being called its complement, or sometimes object.

Answer 2

Answer:

A preposition shows the relationship between a person or a thing denoted by the noun and someone or something else in the sentence. A preposition is placed before a noun in a sentence.