vragen: am/are/is + ww-ing
I = am (Am I living)
you, we, they = are (Are we living)
he, she, it = is (Is he living)
Ontkenningen: am not/ aren't/ isn't + ww-ing
I = am not (I am not living)
you, we, they = are (you aren't living)
he, she, it = is (He isn't living)