I must exchange you must exchange she must exchange we must exchange you must exchange they must exchange
Forma com V-ing
I must be exchanging you must be exchanging she must be exchanging we must be exchanging you must be exchanging they must be exchanging
Perfeito
I must have exchanged you must have exchanged she must have exchanged we must have exchanged you must have exchanged they must have exchanged
Perfeito com V-ing
I must have been exchanging you must have been exchanging she must have been exchanging we must have been exchanging you must have been exchanging they must have been exchanging
Negação
Forma simple
I must not exchange you must not exchange she must not exchange we must not exchange you must not exchange they must not exchange
Forma com V-ing
I must not be exchanging you must not be exchanging she must not be exchanging we must not be exchanging you must not be exchanging they must not be exchanging
Perfeito
I must not have exchanged you must not have exchanged she must not have exchanged we must not have exchanged you must not have exchanged they must not have exchanged
Perfeito com V-ing
I must not have been exchanging you must not have been exchanging she must not have been exchanging we must not have been exchanging you must not have been exchanging they must not have been exchanging
Forma interrogativa
Forma simple
must I exchange? must you exchange? must she exchange? must we exchange? must you exchange? must they exchange?
Forma com V-ing
must I be exchanging? must you be exchanging? must she be exchanging? must we be exchanging? must you be exchanging? must they be exchanging?
Perfeito
must I have exchanged? must you have exchanged? must she have exchanged? must we have exchanged? must you have exchanged? must they have exchanged?
Perfeito com V-ing
must I have been exchanging? must you have been exchanging? must she have been exchanging? must we have been exchanging? must you have been exchanging? must they have been exchanging?
Forma interro-Negação
Forma simple
must I not exchange? must you not exchange? must she not exchange? must we not exchange? must you not exchange? must they not exchange?
Forma com V-ing
must I not be exchanging? must you not be exchanging? must she not be exchanging? must we not be exchanging? must you not be exchanging? must they not be exchanging?
Perfeito
must I not have exchanged? must you not have exchanged? must she not have exchanged? must we not have exchanged? must you not have exchanged? must they not have exchanged?
Perfeito com V-ing
must I not have been exchanging? must you not have been exchanging? must she not have been exchanging? must we not have been exchanging? must you not have been exchanging? must they not have been exchanging?