A preposition is a word such as under, after, or toward that helps show a relationship in a sentence. A proposition can be a proposal or a statement put forward for consideration.
Find the relationship a preposition shows
In The key is under the table, under shows the key’s location relative to the table. In We met after lunch, after shows when the meeting happened. Read Prepositions and Prepositional Phrases for more examples.
Look for a proposal or claim
Nia’s proposition was that the two clubs split the cost of renting the room. Here a proposition is a suggested arrangement. In logic, a proposition is something that can be true or false. The key is under the table expresses a proposition, and the word under within that sentence is a preposition.
