No, “a” and “an” are not prepositions. They are indefinite articles.
Function of “A” and “An” as Indefinite Articles:
- Used Before Singular Countable Nouns to Indicate a Non-Specific Item
- She ordered a salad for lunch.
- He bought an apple from the market.
- Used to Introduce a New or Unspecific Noun
- We need a chef for the restaurant.
- She is looking for an opportunity in hospitality.
Why “A” and “An” Are Not Prepositions
- Prepositions (e.g., in, on, under, about) show relationships between words.
- “A” and “an” do not establish relationships; they modify nouns, making them articles.
Thus, “a” and “an” are indefinite articles, not prepositions.