this is not really German so don't use this to speak or learn German.
the = der (for boy)
the = die (for girl)
the = das for anything that is not a girl or boy E.g. das car, der boy, die cat, der cat
you say it like German and the other words with a bit of German voice.
when talking about a animal say it's gender after the E.g. the girl cat = die cat.