No, “because” is not a preposition. It is primarily a conjunction, though it can also function as a preposition when combined with “of.”
Uses of “Because”:
- As a Conjunction (connecting clauses and explaining reasons)
- The restaurant was busy because it had a special promotion.
- He upgraded the POS system because he wanted better efficiency.
- As a Prepositional Phrase (“Because of”)
- The restaurant closed early because of a power outage.
- Sales increased because of the new marketing strategy.
Why “Because” Is Not a Preposition
- Prepositions show relationships between words (e.g., in, on, under, about).
- “Because” alone does not introduce a noun or pronoun, so it is a conjunction.
- “Because of” functions as a prepositional phrase where “of” is the preposition.
Thus, “because” is a conjunction, not a preposition. However, “because of” is a prepositional phrase.