SI

The Tagalog word si is what grammarians call a "personal topic marker." In Tagalog, you use it in front of a proper name. It's something you don't need in English, but you must remember to use it in Tagalog! 


Si Andrew
= Andrew


Si Andrew ay matangkad.
Andrew is tall.


Mahal ko si Teresa.
I love Teresa.


Si Mark ay payat.
Mark is thin.


Tawagan mo si Lisa.
Call Lisa.



The plural form of si is sina.


Sina Pedro at Eric
= Pedro and Eric


Remember:  in Tagalog you must always put something in front of a proper name! Compare this to the Tagalog words ni and nina, which are also used in front of names.