I must harden you must harden he must harden we must harden you must harden they must harden
Forma con V-ing
I must be hardening you must be hardening he must be hardening we must be hardening you must be hardening they must be hardening
Perfetto
I must have hardened you must have hardened he must have hardened we must have hardened you must have hardened they must have hardened
Perfetto con V-ing
I must have been hardening you must have been hardening he must have been hardening we must have been hardening you must have been hardening they must have been hardening
Negazione
Forma semplice
I must not harden you must not harden he must not harden we must not harden you must not harden they must not harden
Forma con V-ing
I must not be hardening you must not be hardening he must not be hardening we must not be hardening you must not be hardening they must not be hardening
Perfetto
I must not have hardened you must not have hardened he must not have hardened we must not have hardened you must not have hardened they must not have hardened
Perfetto con V-ing
I must not have been hardening you must not have been hardening he must not have been hardening we must not have been hardening you must not have been hardening they must not have been hardening
Forma interrogativa
Forma semplice
must I harden? must you harden? must he harden? must we harden? must you harden? must they harden?
Forma con V-ing
must I be hardening? must you be hardening? must he be hardening? must we be hardening? must you be hardening? must they be hardening?
Perfetto
must I have hardened? must you have hardened? must he have hardened? must we have hardened? must you have hardened? must they have hardened?
Perfetto con V-ing
must I have been hardening? must you have been hardening? must he have been hardening? must we have been hardening? must you have been hardening? must they have been hardening?
Forma interro-negativa
Forma semplice
must I not harden? must you not harden? must he not harden? must we not harden? must you not harden? must they not harden?
Forma con V-ing
must I not be hardening? must you not be hardening? must he not be hardening? must we not be hardening? must you not be hardening? must they not be hardening?
Perfetto
must I not have hardened? must you not have hardened? must he not have hardened? must we not have hardened? must you not have hardened? must they not have hardened?
Perfetto con V-ing
must I not have been hardening? must you not have been hardening? must he not have been hardening? must we not have been hardening? must you not have been hardening? must they not have been hardening?