I must guess you must guess she must guess we must guess you must guess they must guess
Forma com V-ing
I must be guessing you must be guessing she must be guessing we must be guessing you must be guessing they must be guessing
Perfeito
I must have guessed you must have guessed she must have guessed we must have guessed you must have guessed they must have guessed
Perfeito com V-ing
I must have been guessing you must have been guessing she must have been guessing we must have been guessing you must have been guessing they must have been guessing
Negação
Forma simple
I must not guess you must not guess she must not guess we must not guess you must not guess they must not guess
Forma com V-ing
I must not be guessing you must not be guessing she must not be guessing we must not be guessing you must not be guessing they must not be guessing
Perfeito
I must not have guessed you must not have guessed she must not have guessed we must not have guessed you must not have guessed they must not have guessed
Perfeito com V-ing
I must not have been guessing you must not have been guessing she must not have been guessing we must not have been guessing you must not have been guessing they must not have been guessing
Forma interrogativa
Forma simple
must I guess? must you guess? must she guess? must we guess? must you guess? must they guess?
Forma com V-ing
must I be guessing? must you be guessing? must she be guessing? must we be guessing? must you be guessing? must they be guessing?
Perfeito
must I have guessed? must you have guessed? must she have guessed? must we have guessed? must you have guessed? must they have guessed?
Perfeito com V-ing
must I have been guessing? must you have been guessing? must she have been guessing? must we have been guessing? must you have been guessing? must they have been guessing?
Forma interro-Negação
Forma simple
must I not guess? must you not guess? must she not guess? must we not guess? must you not guess? must they not guess?
Forma com V-ing
must I not be guessing? must you not be guessing? must she not be guessing? must we not be guessing? must you not be guessing? must they not be guessing?
Perfeito
must I not have guessed? must you not have guessed? must she not have guessed? must we not have guessed? must you not have guessed? must they not have guessed?
Perfeito com V-ing
must I not have been guessing? must you not have been guessing? must she not have been guessing? must we not have been guessing? must you not have been guessing? must they not have been guessing?