I must fight you must fight he must fight we must fight you must fight they must fight
Forma com V-ing
I must be fighting you must be fighting he must be fighting we must be fighting you must be fighting they must be fighting
Perfeito
I must have fought you must have fought he must have fought we must have fought you must have fought they must have fought
Perfeito com V-ing
I must have been fighting you must have been fighting he must have been fighting we must have been fighting you must have been fighting they must have been fighting
Negação
Forma simple
I must not fight you must not fight he must not fight we must not fight you must not fight they must not fight
Forma com V-ing
I must not be fighting you must not be fighting he must not be fighting we must not be fighting you must not be fighting they must not be fighting
Perfeito
I must not have fought you must not have fought he must not have fought we must not have fought you must not have fought they must not have fought
Perfeito com V-ing
I must not have been fighting you must not have been fighting he must not have been fighting we must not have been fighting you must not have been fighting they must not have been fighting
Forma interrogativa
Forma simple
must I fight? must you fight? must he fight? must we fight? must you fight? must they fight?
Forma com V-ing
must I be fighting? must you be fighting? must he be fighting? must we be fighting? must you be fighting? must they be fighting?
Perfeito
must I have fought? must you have fought? must he have fought? must we have fought? must you have fought? must they have fought?
Perfeito com V-ing
must I have been fighting? must you have been fighting? must he have been fighting? must we have been fighting? must you have been fighting? must they have been fighting?
Forma interro-Negação
Forma simple
must I not fight? must you not fight? must he not fight? must we not fight? must you not fight? must they not fight?
Forma com V-ing
must I not be fighting? must you not be fighting? must he not be fighting? must we not be fighting? must you not be fighting? must they not be fighting?
Perfeito
must I not have fought? must you not have fought? must he not have fought? must we not have fought? must you not have fought? must they not have fought?
Perfeito com V-ing
must I not have been fighting? must you not have been fighting? must he not have been fighting? must we not have been fighting? must you not have been fighting? must they not have been fighting?