as far as i know, there are two structures for Tagalog sentences..
1. Karaniwan (ordinary or common)
ex. Maganda ako. = I am beautiful.
Maganda = beautiful
ako = I / me
Karaniwan is the structure that is commonly used in conversations, whether it is polite or informal. In this structure, the predicate comes first (maganda) then followed by the subject (ako).
2. Di karaniwan (not ordinary or not common)
ex. Ako ay maganda. = I am beautiful
ako = I
ay = am/is/are
maganda = beautiful
Di karaniwan is usually used in literature or in very formal events. In this structure, the subject (ako = I) comes first, then followed by the linking verb (ay = am/is/are), then ends with the predicate, an adjective to be exact (maganda = beautiful)