For "regarding" or "concerning":
* Tungkol sa (most common) - This is the direct translation of "about" and is used in most cases.
* Patungkol sa (formal) - This is a more formal way of saying "about."
For "approximately" or "around":
* Mga (for numbers) - This is used when talking about approximate quantities. Example: "Mga 10 tao" (About 10 people).
* Halos (for time, quantities, etc.) - This means "almost" or "nearly." Example: "Halos alas-siyete na" (It's almost 7 o'clock).
For "on the subject of":
* Tungkol sa (can also be used here) - This is the most common way to express this meaning.
For "in regards to":
* Tungkol sa (again, this can be used) - This is the most common way to express this meaning.
Example Sentences:
* Tungkol sa pag-aaral (About studying)
* Patungkol sa iyong pamilya (Regarding your family)
* Mga 100 pesos (About 100 pesos)
* Halos isang oras na siya rito (He's been here almost an hour)
* Tungkol sa pelikula (On the subject of the movie)
The best way to choose the right Tagalog word for "about" is to consider the context of the sentence and the meaning you want to convey.