We read it as [It is] eight thirty.
In Spanish, it reads as [son] las ocho y media
las ocho = eight
y media = half. since there is 60 mins in an hour; 30 minutes is half of an hour.
Yo <u><em>me vuelvo</em></u> nervioso antes de una prueba.
Chica is basically la so it would make “la chica” and then the following sentence