1. “I have never seen that car before.”
  2. “Go where no man has gone before.”
    Could you confirm ‘before’ in the above sentences are used as preposition or adverb?

Mr. Beeesneees,
Could you please answer me?

Hi Allifathima,
I’m not sure about the answer of your question,
but can you tell me why do you think that ‘before’ could be preposition there!!? :-/

I’d like to know the answer as well. And the proper explanation.