Can you end a sentence with the word before?

You can't end a sentence with the word "before" in the way you're probably thinking. "Before" is a preposition, and prepositions usually need an object to follow them.

For example, you could say:

* I arrived at the party before the music started.

Here, "before" is a preposition and "the music started" is its object.

Let me know if you have any other word-related questions!