"I am a teacher."
Translation:He kumu au.
There are a few different ways to create equational sentences (x=y). If one of the terms use the determiner "he", then it seems there is a preference to put that one first and just begin the sentence with the "He". If neither of the terms uses the determiner "he", then I'm less certain on the preferences. Starting with a number seems like it is also a common choice. It seems if you do not have a number or "he" to put first, then it looks, to me, like you have to use "'O" at the beginning to indicate that this is going to be an equational sentence. If you have a term that already requires "'o" (proper names, the pronoun ia, the question word wai, etc.) it can go at the beginning and just take one "'O", but it can also be the second term and the sentence would still start with "'O": "'O Keoki ke kumu" vs "'O ke kumu 'o Keoki".