Page 59 - Tagalog for Beginners: An Introduction to Filipino, the National Language of the Philippines

Second, the noun (the book, chair, pencil, etc.) follows the word may.
Third, when using may, the word ba (which, as explained earlier, is added
when asking questions) the singular second person pronoun ka, and comes after
all other pronouns which are found at the end of the sentence.

Example for may questions using the singular second person pronoun ka:
May libro ka ba?

Do you have a book? (literally, Have book you ba ?)

Example for may questions using the plural second person pronoun kayo
(also used in formal situations):

May libro ba kayo?
Do you have a book? (literally, Have book ba you?)

Example for may questions using the singular third person pronoun siya:
May libro ba siya?

Does he/she have a book? (literally, Have book ba he/she?)

Fourth, when using mayroon, mayroon is followed by the word ba, which is
then followed by the pronoun (except for the singular second person pronoun
ka), and then the noun.
Example for mayroon question using the singular second person pronoun ka:

Mayroon ka bang libro?
Do you have a book? (literally, Have you ba linker book?)

Example for mayroon question using plural second person pronoun kayo:
Mayroon ba kayong libro?

Do you have a book? (literally, Have ba you linker book?)

Example for mayroon question using singular third person pronoun siya:
Mayroon ba siyang libro?

Does he/she have a book? (literally, Have ba he/she book?)

III. The linker na contracted as “ng”
The linker na is used in mayroon questions but is not used in may questions.
It links either the word ba to the noun (when using the singular second
pronoun ka) or the pronoun (when using all other pronouns) to the noun.