A preposition links nouns, pronouns, and phrases to other words in a sentence. The word or phrase that the preposition introduces is called the object of the preposition.
|above||below||in||on top of||under|
|across||beneath||in front of||onto||underneath|
The bird is on the tree. We should stop for lunch before we get there.
The girl is near the table. The car is in front of the house.
We leaned against the porch. Sara’s car is across the parking lot.
The soda is by the food. He held the book over the table.
Note: When the same preposition is used with both parts of the compound unit, it should be written only after the second unit.
Correct: We were alternately repelled and fascinated by the snake charmer’s act.
Incorrect: We were alternately repelled by and fascinated by the snake charmer’s act.
Avoid Unnecessary or repeated prepositions. Delete the underlined prepositions in formal writing.
I met up with your uncle yesterday.
We keep the dog food inside of the house.
The package fell off of the speeding truck.
Where is your older brother at?
*Adapted from Handbook of English Fundamentals by Donald W. Emery, John M. Kierzek, and Peter Lindblom and http://www.arts.uottawa.ca/writcent/hypergrammar/preposit.html.