פי

In a sentence

• אני אוכל פי שתיים מהרגיל.

  I eat twice as much as usual.

  Here, 'פי' means 'times' as a multiplier, showing quantity.

• על פי הוראות הרופא, אני לוקח תרופה כל בוקר.

  According to the doctor's instructions, I take medicine every morning.

  Here, 'פי' is part of the phrase 'על פי', which means 'according to' to show reference.

• פי לחיוך שלך, אני מתרגש כל פעם מחדש.

  Concerning your smile, I get excited each time afresh.

  Here, 'פי' is metaphorically placed to illustrate a poetic or emotional subject in relation to the statement.