Formal:
* Eu adoro: This is the most common and straightforward way to say "I adore" in Portuguese. It's appropriate for most situations, including formal ones.
* Eu amo muito: This translates to "I love very much," and is a more emphatic way of expressing adoration.
Informal:
* Adoro: You can drop the "eu" (I) in informal situations, especially when talking to friends and family.
* Amo: This is a more informal way to say "I love" and can also be used to express adoration.
* Eu te adoro: This translates to "I adore you" and is a very affectionate way to express adoration.
Other expressions:
* Eu tenho uma paixão por: This translates to "I have a passion for" and can be used to express adoration for a specific thing or person.
* Eu sou apaixonado por: This translates to "I am passionate about" and is similar to "I have a passion for."
The best choice depends on the specific context and the person you're talking to. For example, you would use "Eu adoro" or "Eu amo muito" for a formal situation, while "Adoro" or "Amo" would be more appropriate for a casual conversation with friends.