Proposition: A preposition is a word that expresses relationships between people places and things. They help us to understand a time, way or positional connection between two or more things. Using them in your writing helps your reader to imagine your setting and how things move within that setting more effectively.
Positional proposition: her bag was under the desk. The cat slept on the pillow. He lived over the shop.
Time preposition: They arrived 10 minutes after the speech started Class begins at 9am They were married 7 years after they met.
Directed preposition: They watched each other without speaking The popcorn sat between them on the couch.