Prepositions are usually short words and they are normally placed directly in front of nouns. A preposition of time is a preposition that allows you to discuss a specific time period such as a date on the calendar one of the days of the week or the actual time something takes place. Prepositions What Is A Preposition Useful List Examples 7 E S L English Collocations English Language Learning Learn English Vocabulary Into within upon onto etc. Preposition definition in simple words . Simple prepositions are the short words used to determine a relation between nouns pronouns or even to join parts of a clause or sentence. The cat jumped off the counter. Using a preposition with a noun phrase creates a connecting phrase. Recognize examples of these phrases and learn the roles or uses that prepositions play in. Because of these functions theyre often essential to understanding a sentence. Some examples of prepositions are words like in at on of and to Prepositions in.