Prepositions are words that show the relationship of nouns and pronouns with the other words in a sentence. Some examples of prepositions are in, on, of, by, with, to, into, between, up, off, between, to and for.
Sometimes, prepositions are unnecessary and can be easily removed.
Poor: Where is she at?
Better: Where is she?
Poor: The shift is now over with.
Better: The shift is now over.
However, some prepositions are essential as they change the meaning of a word. The following is a list of the most commonly used words with their necessary prepositions.