I must head you must head she must head we must head you must head they must head
Forma con V-ing
I must be heading you must be heading she must be heading we must be heading you must be heading they must be heading
Perfetto
I must have headed you must have headed she must have headed we must have headed you must have headed they must have headed
Perfetto con V-ing
I must have been heading you must have been heading she must have been heading we must have been heading you must have been heading they must have been heading
Negazione
Forma semplice
I must not head you must not head she must not head we must not head you must not head they must not head
Forma con V-ing
I must not be heading you must not be heading she must not be heading we must not be heading you must not be heading they must not be heading
Perfetto
I must not have headed you must not have headed she must not have headed we must not have headed you must not have headed they must not have headed
Perfetto con V-ing
I must not have been heading you must not have been heading she must not have been heading we must not have been heading you must not have been heading they must not have been heading
Forma interrogativa
Forma semplice
must I head? must you head? must she head? must we head? must you head? must they head?
Forma con V-ing
must I be heading? must you be heading? must she be heading? must we be heading? must you be heading? must they be heading?
Perfetto
must I have headed? must you have headed? must she have headed? must we have headed? must you have headed? must they have headed?
Perfetto con V-ing
must I have been heading? must you have been heading? must she have been heading? must we have been heading? must you have been heading? must they have been heading?
Forma interro-negativa
Forma semplice
must I not head? must you not head? must she not head? must we not head? must you not head? must they not head?
Forma con V-ing
must I not be heading? must you not be heading? must she not be heading? must we not be heading? must you not be heading? must they not be heading?
Perfetto
must I not have headed? must you not have headed? must she not have headed? must we not have headed? must you not have headed? must they not have headed?
Perfetto con V-ing
must I not have been heading? must you not have been heading? must she not have been heading? must we not have been heading? must you not have been heading? must they not have been heading?