For direction or destination:
* Para: This is the most common translation for "to" when indicating direction or destination.
* Example: "Vou para a escola." (I am going to school.)
* A: This is used before place names that begin with a vowel or "h".
* Example: "Vou a Lisboa." (I am going to Lisbon.)
For purpose or recipient:
* Para: This is also used when indicating purpose or recipient.
* Example: "Comprei este presente para você." (I bought this present for you.)
For time:
* Para: This is used when referring to a specific time or deadline.
* Example: "O filme começa às 8 horas da noite." (The movie starts at 8 p.m.)
For comparison:
* A: This is used when comparing something.
* Example: "Esta casa é similar a aquela." (This house is similar to that one.)
For infinitive verbs:
* a: This is used before infinitive verbs.
* Example: "Eu gosto de cantar." (I like to sing.)
It's important to consider the context of the sentence to determine the appropriate translation for "to" in Portuguese.