HAVE TO (DOVERE)
I/YOU/WE/YOU/THEY-HE/SHE IT
FORMA AFFERMATIVA
My brothers have to tidy their room
I/YOU/WE/YOU/THEY-HE/SHE/IT
FORMA NEGATIVA
I don't have to walk the dog
Laura doesn't have to walk the dog
I/YOU/WE/YOU/THEY-HE/SHE/IT
FORMA INTERROGATIVA E RISPOSTE BREVI
Do I have to stop? Yes, you do/No, you don't
Does Laura have to stop? Yes, she does/No, she doesn't