AFIRMATIVA: I am a student. You are in the classroom. NEGATIVA They aren't from London He isn't happy. INTERROGATIVA: Is she in the car? yes, she is / no, she isn't Is he a doctor? yes he is / no he isn't
PRESENT CONTINUOUS
AFIRMATIVA: I am travelling to Spain You are playing soccer NEGATIVA They aren't play the piano. We aren't listenig the class.