to (Preposition) — In the direction of. ex. "go to school"
to (Preposition) — Sign of the infinitive case. ex. "to go out"
to (Preposition) — Used after an adjective to indicate its application. ex. "similar to that", "she was nice to him"
to (Preposition) — Indicate a ratio or odds. ex. "five to one against"
to (Preposition) — Indicating a rate or relation. ex. "Euros to the pound"
to (Preposition) — (time) before. ex. "the time is now five minutes to one"