I don't really understand where to put the word "ba" in Tagalog questions. I found a few resources that helped me out a little bit and told me this:
1.) "Ba" can only be used in a yes-or-no question.
2.) It can come after the predicate in a simple predicative sentence.
Example: Doktor si Pedro sa PGH. -> Doktor ba si Pedro sa PGH?
3.) If the sentence has the word "ay", "ba" comes after the focus/subject of the verb.
Example: Si Pedro ay doktor sa PGH. -> Si Pedro ba ay...
Ba Placement in Tagalog Questions
1.) "Ba" can only be used in a yes-or-no question.
2.) It can come after the predicate in a simple predicative sentence.
Example: Doktor si Pedro sa PGH. -> Doktor ba si Pedro sa PGH?
3.) If the sentence has the word "ay", "ba" comes after the focus/subject of the verb.
Example: Si Pedro ay doktor sa PGH. -> Si Pedro ba ay...
Ba Placement in Tagalog Questions