Translate did you eat breakfast in Tagalog?

The most natural translation of "Did you eat breakfast?" in Tagalog is:

Kumain ka na ba ng almusal?

Here's a breakdown:

* Kumain - to eat

* ka - you (informal)

* na - already

* ba - question particle

* ng - of

* almusal - breakfast

You can also use the more formal "Kumain ka na ba ng agahan?", where "agahan" is another word for breakfast.