a) They are sleeping right now.
Negativa: They aren't sleeping right now.
Interrogativa: Are they sleeping right now?
b) I am a teacher.
Negativa: I am not a teacher.
Interrogativa: Am I a teacher?
THEY AREN'T DRINKING BEER AND EATING FISH
B-IS THERE A SHOE UNDER THE TABLE?
THERE ISN'T A SHOE UNDER THE TABLE
C-AM I THE BEST STUDENT?
I AM NOT THE BEST STUDENT
D-IS RONALDINHO PLAYING AGAINST BRASIL?
RONALDINHO ISN'T PLAYING AGAINST BRASIL
neg: they are not(ou aren't) drinking beer and eating fish
int: are they drinking beer and eating fish?
neg: there is not (ou isn't)a shoe under the table
int: is there a shoe under the table?
neg: I am not the best student
int: am I the best student?
neg: Ronaldinho is not(ou isn't ) playing against Brazil
int: is Ronaldinho playing against Brazil?