Formal:
* E fiafia aʻu i ... (e fee-ah-fee-ah ah-oo ee ...): This is the most formal way to say "I like" and is often used when speaking to elders or people in positions of authority.
* Ou te fiafia i ... (ou te fee-ah-fee-ah ee ...): This is a more formal way to say "I like" and is suitable for most situations.
Informal:
* Ou fiafia i ... (ou fee-ah-fee-ah ee ...): This is a more casual and informal way to say "I like".
* Ou fiafia lava i ... (ou fee-ah-fee-ah lah-vah ee ...): This is a more emphatic way to say "I like", similar to "I really like".
Example:
Let's say you want to say "I like mangoes". You could say:
* E fiafia aʻu i mango. (formal)
* Ou te fiafia i mango. (formal)
* Ou fiafia i mango. (informal)
* Ou fiafia lava i mango. (informal and emphatic)
Remember that the choice of which phrase to use depends on the context and your relationship with the person you are speaking to.